Ngeeeeeennnggg…..
Pernah naik ojek online nggak Squad? Misal dari rumah kamu ke sekolah gitu. Kalau kamu pernah atau mungkin sering menggunakan jasa ojek online, pernah kepikiran kenapa motor si abang ojek itu bisa jalan nggak?
“Karena ada bensin”
Iya benar, tapi lebih spesifik lagi dong. Kamu harus tahu nih bahwa mesin motor si abang ojek online itu bisa gerak karena adanya perubahan energi di mesin kalor. Apa itu mesin kalor?
A. Mesin Kalor / Mesin Carnot
Mesin kalor bisa disebut juga Mesin Carnot. Mesin ini merupakan alat yang berfungsi mengubah energi panas menjadi energi mekanik. Sebagai contohnya, mesin motor ojek online tadi. Hasil pembakaran dari bahan bakar diubah menjadi energi gerak dalam mesin mobil.
Rangkaian mesin motor yang bergerak karena adanya energi panas dari hasil pembakaran bahan bakar. (sumber: giphy.com)
Gambar di atas tadi merupakan piston yang ada pada mesin kendaraan yang menggunakan prinsip aliran kalor spontan.Mesin carnot memanfaatkan prinsip kalor yang mengalir dari suhu tinggi ke suhu rendah tanpa perlu melakukan usaha. Saat aliran kalor terjadi, panas yang mengalir diubah menjadi usaha, misalnya gerak. Konsep tersebutlah yang ditemukan oleh Nicolas Leonard Sadi Carnot.
Nicolas Leonard Sadi Carnot (sumber: theapricity.com)
Nah, supaya dapat menghasilkan usaha, mesin carnot perlu menjalani empat buah langkah yaitu 2 proses isotermal dan 2 proses adiabatik. Gambarannya itu seperti ini Squad.
Siklus dalam mesin carnot (sumber: quora.com)
Pertama-tama, gas mengalami pemuaian isotermal. Pada saat ini, gas menyerap kalor Q1 dari reservoir suhu tinggi T1 dan melakukan usaha. Kemudian, gas mengalami pemuaian adiabatik. Pada proses ini, gas juga melakukan usaha.
Setelah melalui 2 proses pemuaian , gas mengalami kompresi/penyusutan isotermal. Gas membuang kalor Q2 ke reservoir suhu rendah T2. Pada proses ini, gas mendapatkan usaha. Akhirnya, di proses terakhir gas mengalami kompresi/penyusutan adiabatik. Pada proses ini, gas mendapatkan usaha kembali, dan kembali ke bentuk semula. Berhubung proses ini mengembalikan kondisi gas ke kondisi semula, maka siklus ini tidak mengalami perubahan energi dalam. Maka, persamaan termodinamikanya menjadi
Menurut Nicolas Carnot, mesin yang ideal adalah mesin yang sanggup mengubah seluruh panas menjadi usaha. Sayangnya, mesin ideal itu tidak pernah ada. Semua mesin tidak dapat mengubah seluruh panas menjadi usaha. Sebagian besar panas terbuang sia-sia. Sebagian lagi menjadi bunyi, getaran, atau asap dan hanya sebagian kecil yang menjadi usaha. Buktinya apa Squad?
Hasil pembakaran mesin ada yang menjadi asap (sumber: giphy)
Oleh karena itu, ada konsep yang dikenal dengan efisiensi mesin Carnot. Efisiensi adalah perbandingan dari panas yang berubah menjadi usaha dengan panas yang diserap. Mudahnya begini Squad, hasil bagi antara usaha yang dilakukan dengan kalor yang diserap. Rumusnya seperti ini.
Sementara di atas sudah disebutkan bahwa Q1 – Q2 =W, maka
Nah, karena Q1 = T1 dan Q2 = T2 , maka rumus di atas dapat juga berubah menjadi
Baca Juga: Cara Kerja Teropong Bintang dan Rumus Penghitungannya
B. Mesin Pendingin
Kalau kamu di dalam ruangan ber-AC, apa yang kamu rasakan?
Sejuk kan? Nah, coba kalau kamu berdiri di samping benda ini yang sebenarnya masih satu paket dengan AC yang kamu rasa sejuk itu, gimana rasanya?
Kompresor dan kondensor AC mengeluarkan hawa panas (sumber:artomorobarokahteknik.com)
Panas kan? Itu dia. Mesin pendingin seperti AC itu kebalikan dari mesin carnot. Mesin pendingin membuang kalor dari tempat dingin ke tempat panas dan membutuhkan usaha supaya proses tersebut bisa berjalan. Mesin pendingin membutuhkan usaha.
Kenapa perlu usaha? Ini karena proses pada mesin pendingin adalah tidak spontan. Usaha yang dibutuhkan untuk menjalankan mesin pendingin dapat dihitung menggunakan persamaan.
W = Q1 -Q2
Nah, seperti mesin carnot, mesin pendingin juga tidak ideal, alias tidak dapat mengubah semua usaha untuk membuang panas. Ada sebagian usaha yang dilakukan terbuang menjadi panas lagi, menjadi bunyi, dan atau menjadi getaran.
Jika mesin pendingin itu ideal, maka persamaan yang berlaku adalah
Nah, ketidakidealan mesin pendingin dapat dilihat dari koefisien performansi. Pada dasarnya, ini adalah “efisiensi versi mesin pendingin”. Koefisien performansi ditunjukkan dengan
Karena W = Q1 – Q2, maka
Atau, karena, maka
Sekarang, kamu tahu kan kenapa angin keluaran dari AC terasa panas? Yups, karena mesin pendingin bertugas membuang panas yang ada di dalam ruangan ke luar ruangan.
Masih bingung tentang mesin kalor dan mesin pendingin? Diskusikan langsung yuk bersama teman-teman di seluruh Indonesia melalui live teaching Brain Academy Online. Dipandu oleh STAR Master Teacher lulusan PTN ternama yang asyik dan sabar banget!
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<h1 class="content-title">
Apa Itu Mesin Kalor dan Mesin Pendingin? | Fisika Kelas 11 </h1>
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<p class="content-author"><a href="https://www.ruangguru.com/blog/author/tedy-rizkha-heryansyah" class="">Tedy Rizkha Heryansyah</a> </p>
<p class="content-info"><span>May 15, 2018 • </span> <span>4 minutes read</span></p>
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<p style="text-align: center;"><span style="color: #000000;"><em><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Header%20blog%20RG/Fisika_11.jpg" alt="Fisika kelas 11 materi tentang kalor dan pendingin" width="821" style="width: 821px;"></em></span></p>
<p style="text-align: justify;"><span style="color: #000000;"><em>Ngeeeeeennnggg…..</em></span></p>
<p><span style="color: #000000;"></span></p>
<p style="text-align: justify;"><span style="color: #000000;">Pernah naik ojek online nggak Squad? Misal dari rumah kamu ke sekolah gitu. Kalau kamu pernah atau mungkin sering menggunakan jasa ojek online, pernah kepikiran kenapa motor si abang ojek itu bisa jalan nggak?</span></p>
<p style="text-align: justify;"><span style="color: #000000;">“Karena ada bensin”</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Iya benar, tapi lebih spesifik lagi dong. Kamu harus tahu nih bahwa mesin motor si abang ojek online itu bisa gerak karena adanya perubahan energi di mesin kalor. Apa itu mesin kalor?</span></p>
<p style="text-align: justify;"><span style="color: #000000;"> <span id="more-9868"></span></span></p>
<h2 style="text-align: justify; font-size: 24px;"><span style="color: #0000ff;"><strong>A. Mesin Kalor / Mesin Carnot</strong></span></h2>
<p style="text-align: justify;"><span style="color: #000000;"><strong>Mesin kalor bisa disebut juga Mesin Carnot</strong>. Mesin ini merupakan <strong>alat yang berfungsi mengubah energi panas menjadi energi mekanik</strong>. Sebagai contohnya, mesin motor ojek online tadi. Hasil pembakaran dari bahan bakar diubah menjadi energi gerak dalam mesin mobil.</span></p>
<div><span style="color: #000000;"><img decoding="async" src="https://lh3.googleusercontent.com/J2CzVrKrrvxpL1R9EtBawp05CM93yp6rHl07hvCRTwRQe_xzugkOP9huJoYkuBGhW9URsoe5atKBtzPudElspC7UUdU6FZvvwY7-Hn7_OM0cqcchh6nS2f2R-0DOW5C05Lz_mOvJ" alt="piston mesin - mesin kalor" style="display: block; margin-left: auto; margin-right: auto;"></span></div>
<p style="text-align: center;"><span style="color: #000000;">Rangkaian mesin motor yang bergerak karena adanya energi panas dari hasil pembakaran bahan bakar. (sumber: giphy.com)</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Gambar di atas tadi merupakan piston yang ada pada<strong> mesin kendaraan</strong> yang menggunakan <strong>prinsip aliran kalor spontan</strong>.<strong>Mesin carnot</strong> memanfaatkan <strong>prinsip kalor</strong> yang <strong>mengalir dari suhu tinggi ke suhu rendah tanpa perlu melakukan usaha</strong>. Saat aliran kalor terjadi, <strong>panas yang mengalir diubah menjadi usaha</strong>, misalnya gerak. Konsep tersebutlah yang ditemukan oleh Nicolas Leonard Sadi Carnot.</span></p>
<div><span style="color: #000000;"><img decoding="async" src="https://lh5.googleusercontent.com/Av0xhhrWRdExw_4Ek8dRC5KezRY_n0koov6mOeLHOXx8uUkn5WaWJ7ZyBqm9JS6LEw3LzbTBCrPDa0kdr9TkbS12XO_CnuWcxihT1I1ti34k2WqYZGKVeifZEDqvgoGPfmTWCDvH" alt="nicolas carnot - mesin kalor" width="340" style="width: 340px; display: block; margin: 0px auto;"></span></div>
<p style="text-align: center;"><span style="color: #000000;">Nicolas Leonard Sadi Carnot (sumber: theapricity.com)</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Nah, supaya dapat menghasilkan usaha,<strong> mesin carnot</strong> perlu menjalani <strong>empat buah langkah</strong> yaitu <strong>2 proses isotermal </strong>dan <strong>2 proses adiabatik</strong>. Gambarannya itu seperti ini Squad.</span></p>
<div><span style="color: #000000;"><img decoding="async" src="https://lh3.googleusercontent.com/wsS9nciznnOySBvJ2ns0UZycByckdEQmQcdhp9eJTUeIstnbpL_iFciZx0uci2uFLXRvsG0v1l2N8jXPY_PUjZ8exH47uPe9Y_VQGfvEmQt4S5Do0FI65UAWBDOoFoO8FkBfCAxo" alt="siklus mesin carnot - mesin kalor" width="600" style="width: 600px; display: block; margin: 0px auto;"></span></div>
<p style="text-align: center;"><span style="color: #000000;">Siklus dalam mesin carnot (sumber: quora.com)</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Pertama-tama, <strong>gas mengalami pemuaian isotermal</strong>. Pada saat ini, <strong>gas menyerap kalor</strong> Q1 dari reservoir suhu tinggi T1 dan melakukan usaha. Kemudian, <strong>gas mengalami pemuaian adiabatik</strong>. Pada proses ini,<strong> gas juga melakukan usaha</strong>.</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Setelah melalui 2 proses pemuaian , <strong>gas mengalami kompresi/penyusutan isotermal</strong>. <strong>Gas membuang kalor </strong>Q2 ke reservoir suhu rendah T2. Pada proses ini, <strong>gas mendapatkan</strong> <strong>usaha</strong>. Akhirnya, di <strong>proses terakhir gas mengalami kompresi/penyusutan adiabatik</strong>. Pada proses ini, gas <em>mendapatkan </em>usaha kembali, dan kembali ke bentuk semula. Berhubung <strong>proses ini mengembalikan kondisi gas ke kondisi semula</strong>, maka <strong>siklus ini tidak mengalami perubahan energi dalam</strong>. Maka, persamaan termodinamikanya menjadi</span></p>
<div><span style="color: #000000;"><img decoding="async" src="https://lh6.googleusercontent.com/GM3LppxTiNbXbOGMRfrIM-SeIUtgjBH8PmevSARSjerBGry6tDmKMJjI4xDtAg4c7SpQuJrlP0TrnKoHqati1DHVB255w-OB_1JHx7QR3UWXPz2b2OUQGZ4SV2BTMVF9TaIsEdCj" alt="persamaan termodinamika" width="160" style="width: 160px; display: block; margin: 0px auto;"></span></div>
<p style="text-align: justify;"><span style="color: #000000;"> </span><span style="background-color: transparent;">Menurut Nicolas Carnot, </span><strong style="background-color: transparent;">mesin yang ideal</strong><span style="background-color: transparent;"> adalah </span><strong style="background-color: transparent;">mesin yang sanggup mengubah seluruh panas menjadi usaha</strong><span style="background-color: transparent;">. Sayangnya, mesin ideal itu tidak pernah ada. Semua mesin tidak dapat mengubah seluruh panas menjadi usaha. Sebagian besar panas terbuang sia-sia. Sebagian lagi menjadi bunyi, getaran, atau asap dan hanya sebagian kecil yang menjadi usaha. Buktinya apa Squad?</span></p>
<div><span style="color: #000000;"><img decoding="async" src="https://lh4.googleusercontent.com/3wPN_Vj4OEaCHjsbAZ1vH0ihX8OuvGt68qL1jmaMxibKsFCJ7tfSjvuhVtWd-645YRwRKsepgGIknj8Q0b6gT-0WzxMN5Fsyrovmr8SHnPi3vFL34j1jn1bM0FekOH_LtNX71Uwf" alt="hasil pembakaran mesin menjadi asap" width="500" style="width: 500px; display: block; margin: 0px auto;"></span></div>
<p style="text-align: center;"><span style="color: #000000;">Hasil pembakaran mesin ada yang menjadi asap (sumber: giphy)</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Oleh karena itu, ada konsep yang dikenal dengan <strong>efisiensi mesin Carnot</strong>. <strong>Efisiensi</strong> adalah <strong>perbandingan dari panas yang berubah menjadi usaha dengan panas yang diserap</strong>. Mudahnya begini Squad, <strong>hasil bagi antara usaha yang dilakukan dengan kalor yang diserap</strong>. Rumusnya seperti ini.</span></p>
<div><span style="color: #000000;"><img decoding="async" src="https://lh3.googleusercontent.com/U2e6BQCyS1S-W05O1gfP_NXtvnLzNOIAQjFmRV4eGIeHmfk7s_-qXJt6b_hbvnnFXavtj1QZBF881QDWtokaJin2DDuD5fO6QFYiskRblZ7XYgpMlFNhdNRWEV1SesAH0wQ-pjfK" alt="efisiensi mesin carnot" width="205" style="width: 205px; display: block; margin: 0px auto;"></span></div>
<p style="text-align: justify;"><span style="color: #000000;">Sementara di atas sudah disebutkan bahwa Q1 – Q2 =W, maka</span></p>
<div><span style="color: #000000;"><img decoding="async" src="https://lh6.googleusercontent.com/uQkBkxE_hPdfC4qon7NNQ4ihP_gRcL3LLUnFfmP6UXjsG5L8GWnR7ptgKIY_dHAWHio_y3ikNBCUeL5oDClfv28vyRldlJMeJVAVmwVKWRZ7NL6sEkAPAl0xQVcS_EfF65LGXD-m" alt="rumus efisiensi mesin carnot" width="201" style="width: 201px; display: block; margin: 0px auto;"></span></div>
<p style="text-align: justify;"><span style="color: #000000;">Nah, karena Q1 = T1 dan Q2 = T2 , maka rumus di atas dapat juga berubah menjadi</span></p>
<div><span style="color: #000000;"><img decoding="async" src="https://lh3.googleusercontent.com/cMH8Sv0oCbWWRmGIKidNHGAarC2pZs9sjgjcL9dRuLdutoekjLyyc6l9DFgQUcabsTPYnl4m69MB2U8bhOxFQgkqznWhA0K5LdIcKX5YZrr1LwJe17NlxmkwsA1RixYyFqLsDfHn" alt="rumus perubahan mesin carnot" width="189" style="width: 189px; display: block; margin: 0px auto;"></span></div>
<p style="text-align: justify;"><span style="color: #000000;"> </span></p>
<p style="text-align: justify;"><span style="color: #000000;"><strong>Baca Juga: <span style="color: #008000;"><a href="https://blog.ruangguru.com/cara-kerja-teropong-bintang" style="color: #008000;">Cara Kerja Teropong Bintang dan Rumus Penghitungannya</a></span></strong></span></p>
<h2 style="text-align: justify; font-size: 24px;"><span style="color: #0000ff;"><strong>B. Mesin Pendingin</strong></span></h2>
<p style="text-align: justify;"><span style="color: #000000;">Kalau kamu di dalam ruangan ber-AC, apa yang kamu rasakan?</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Sejuk kan? Nah, coba kalau kamu berdiri di samping benda ini yang sebenarnya masih satu paket dengan AC yang kamu rasa sejuk itu, gimana rasanya?</span></p>
<div><span style="color: #000000;"><img decoding="async" src="https://lh3.googleusercontent.com/CIvD3kXgqTJxGEpKVVbky67CObBgsCQ4S44-a3mXDgY_YlHtYb926cQ9Ob0inC44Cjlyf2HGuyUW1ZdE5XBMJO3IVkq1X64Wgkq3tM2jhwEXjFKCl6TL8fq-UY7XHf5kEBT6dvhm" alt="kompresor dan kondensor ac" width="600" style="width: 600px; display: block; margin: 0px auto;"></span></div>
<p style="text-align: center;"><span style="color: #000000;">Kompresor dan kondensor AC mengeluarkan hawa panas (sumber:artomorobarokahteknik.com)</span></p>
<p><span style="color: #000000;">Panas kan? Itu dia. Mesin pendingin seperti AC itu kebalikan dari mesin carnot. <strong>Mesin pendingin membuang kalor</strong> dari <strong>tempat dingin</strong> ke <strong>tempat panas</strong> dan <strong>membutuhkan</strong> <strong>usaha supaya proses tersebut bisa berjalan</strong>. <strong>Mesin pendingin</strong> <strong>membutuhkan usaha</strong>.</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Kenapa perlu usaha? Ini karena <strong>proses pada mesin pendingin adalah tidak spontan</strong>. Usaha yang dibutuhkan untuk menjalankan mesin pendingin dapat dihitung menggunakan persamaan.</span></p>
<p style="text-align: center;"><span style="color: #0000ff;"><strong><em>W = Q1 -Q2</em></strong></span></p>
<p style="text-align: justify;"><span style="color: #000000;">Nah, seperti mesin carnot, <strong>mesin pendingin juga tidak ideal</strong>, alias <strong>tidak dapat mengubah semua usaha untuk membuang panas</strong>. Ada sebagian usaha yang dilakukan terbuang menjadi panas lagi, menjadi bunyi, dan atau menjadi getaran.</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Jika mesin pendingin itu ideal, maka persamaan yang berlaku adalah</span></p>
<div><span style="color: #000000;"><img decoding="async" src="https://lh5.googleusercontent.com/vLKLP0MNR_m-90Q6wTXNGJLSo9ZQirU8WwppocyuQvCVkifTHkGXFYzRRV45iVG9iSfxwcqTBUNf4VwpemucjcwsD1DBFSqGtZFsomaomAzh7lJxYS3Auje2nCTK4TsOizm5aGTC" alt="persamaan ideal" width="186" style="width: 186px; display: block; margin: 0px auto;"></span></div>
<p style="text-align: justify;"><span style="color: #000000;"> </span><span style="background-color: transparent;">Nah, </span><strong style="background-color: transparent;">ketidakidealan mesin pendingin</strong><span style="background-color: transparent;"> dapat dilihat dari </span><strong style="background-color: transparent;">koefisien performansi</strong><span style="background-color: transparent;">. Pada dasarnya, ini adalah </span><strong style="background-color: transparent;">“efisiensi versi mesin pendingin”</strong><span style="background-color: transparent;">. Koefisien performansi ditunjukkan dengan</span></p>
<p style="text-align: justify;"><span style="color: #000000;"> </span></p>
<div><span style="color: #000000;"><img decoding="async" src="https://lh6.googleusercontent.com/cIKKoZn-OUTbp6mvUue7x-U-SMO92N7Jpd5te6Mn1KeotsAMdoF96_dsgQjdE6rGDgdpBARabcXpsyWOOJgP5X2gEtqpyys-hcWhPhFlw7TB13s9lLvEU_N3yqaq55y5-caSsgep" alt="koefisiensi performansi" width="152" style="width: 152px; display: block; margin: 0px auto;"></span></div>
<p style="text-align: justify;"><span style="color: #000000;"> </span></p>
<p style="text-align: justify;"><span style="color: #000000;">Karena W = Q1 – Q2, maka</span></p>
<p style="text-align: justify;"><span style="color: #000000;"> </span></p>
<div><span style="color: #000000;"><img decoding="async" src="https://lh4.googleusercontent.com/JPl01RPMiHInUCmamS6eSBGjhxpu1bunGDp6VUoCSmPAoCQ1No0ObtRIqheJA-F9YBAN54c2dwQiTe6fxWZtwELYr83hO5Y3b7HwXv_UeE94Zultg6hJD_QhNWyPOCwKgpcFLm4l" alt="rumus koefisiensi performansi" width="178" style="width: 178px; display: block; margin: 0px auto;"></span></div>
<p style="text-align: justify;"><span style="color: #000000;"> </span></p>
<p style="text-align: justify;"><span style="color: #000000;">Atau, karena</span><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/tambahan%20mesin%20kalor.png" alt="tambahan mesin kalor" width="84" style="width: 84px;"><span style="background-color: transparent;">, maka</span></p>
<p style="text-align: justify;"><span style="color: #000000;"> </span></p>
<div><span style="color: #000000;"><img decoding="async" src="https://lh4.googleusercontent.com/dapKmM88qRwjzTDDy1kHUPZWcJ_pmf3ONER_go70cl7MughuNpJIkfWUH138AdMdp-wpVzVZc71gYiuPHN8U7labpvVFIstUhkaEpK3fU1DXQGvbMkbAlwvPL-g-QDIw_Y-3cQ86" alt="menghitung koefisiensi" width="207" style="width: 207px; display: block; margin: 0px auto;"></span></div>
<p style="text-align: justify;"><span style="color: #000000;"> </span></p>
<p style="text-align: justify;"><span style="color: #000000;">Sekarang, kamu tahu kan kenapa angin keluaran dari AC terasa panas? Yups, karena <strong>mesin pendingin bertugas membuang panas yang ada di dalam ruangan ke luar ruangan</strong>.</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Masih bingung tentang mesin kalor dan mesin pendingin? Diskusikan langsung yuk bersama teman-teman di seluruh Indonesia melalui <a href="https://www.brainacademy.id/online/live-teaching" rel="noopener" style="font-weight: bold;"><em>live teaching </em>Brain Academy Online</a>. Dipandu oleh STAR Master Teacher lulusan PTN ternama yang asyik dan sabar banget!</span></p>
<p style="text-align: center;"><span style="color: #000000;"> <a href="http://kelas.brainacademy.id/" target="_blank" style="text-align: center;" class="rg-cta" rel="noopener"><img fetchpriority="high" decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/cta/e5070f85-673f-4221-bef5-1021e2f4d494.jpeg" width="821" height="200" alt="[IDN] CTA Blog Kelas Gratis Brain Academy Online " /></a></span></p>
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<div class="d-lg-none text-center">
<nav class="footer-menu social">
<p class="title">Ikuti Kami</p>
<a target="_blank" href="https://www.instagram.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/instagram.png" loading="lazy" alt="Logo Instagram Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.facebook.com/ruanggurucom/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/facebook.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/facebook.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/facebook.png" loading="lazy" alt="Logo Facebook Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://twitter.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/twitter.png" loading=" lazy" alt="Logo Twitter Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.youtube.com/ruangguru">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/youtube.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/youtube.png" loading=" lazy" alt="Logo Youtube Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.linkedin.com/company/ruangguru-com">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/linkedin.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/linkedin.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/linkedin.png" loading=" lazy" alt="Logo LinkedIn Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.tiktok.com/@ruangguru">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/tiktok.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/tiktok.png" loading=" lazy" alt="Logo TikTok Footer" width="32px" height="32px" />
</picture>
</a>
</nav>
</div>
<p class="footer-copyright">
© 2026 All Rights Reserved PT. Ruang Raya Indonesia
</p>
</div>
<style>
.bantuan-container {
position: relative;
}
.bantuan-element {
position: fixed;
z-index: 999;
display: flex;
align-items: flex-end;
justify-content: flex-end;
cursor: pointer;
transition: all 0.6s ease;
}
.bantuan-top {
bottom: 11rem;
right: 2rem;
}
.bantuan-bottom {
bottom: 2rem;
right: 2rem;
}
.bantuan-top-2 {
bottom: 15rem;
right: 2rem;
}
.bantuan-top-3 {
bottom: 19rem;
right: 2rem;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 2rem;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 2rem;
}
@media (min-width: 768px) {
.bantuan-element img {
width: auto;
transition: all 0.4s ease;
}
.bantuan-top img {
width: 140px;
}
.bantuan-bottom img {
width: 140px;
}
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 140px;
}
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 140px;
}
.bantuan-element.clicked {
bottom: 9rem;
right: 2.5rem;
}
.bantuan-element.clicked img {
width: auto;
height: 64px;
}
}
@media (max-width: 767px) {
.bantuan-top {
bottom: 8rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom {
bottom: 2rem;
right: 1.25rem;
align-items: center;
}
.bantuan-top-2 {
bottom: 12rem;
right: 1rem;
align-items: center;
}
.bantuan-top-3 {
bottom: 16rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 1.25rem;
align-items: center;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 1.25rem;
align-items: center;
}
.bantuan-element img {
width: auto;
}
.bantuan-top img,
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 96px;
}
.bantuan-bottom img,
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 96px;
}
}
.bantuan-element:hover {
transform: scale(1.05);
}
.bantuan-element img {
max-width: 100%;
height: auto;
}
</style>
<div id="bantuan-divs-container" style="position: relative" data-product="ruangguru" data-table="rg_floating_icon"></div>
<script>
class FloatingDivsComponent {
constructor(product = 'ruangguru', table = 'rg_floating_icon') {
this.container = document.getElementById('bantuan-divs-container');
this.floatingElements = [];
this.product = product;
this.table = table;
// Configuration
this.config = {
baseApiUrl: 'https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/rg_banner/views/',
apiKey: 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
maxElements: 2,
zIndexBase: 100,
};
// Build dynamic API URL based on table parameter
this.config.apiUrl = this.buildApiUrl();
this.init();
}
buildApiUrl() {
const baseUrl = this.config.baseApiUrl;
const tableName = this.table || 'rg_floating_icon';
const queryParams =
'offset=0&limit=99999&sort=rankPosition&where=(type,eq,floating)~and(showIn,anyof,blog)~and(hide,is,false)~and(product,eq,' +
this.product +
')&nested%5Bcta%5D%5Bfields%5D=Id,name,ctaId,imageUrl,ctaLink,targetUrl';
return `${baseUrl}${tableName}?${queryParams}`;
}
async init() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to initialize floating divs component:', error);
}
}
async fetchFloatingElements() {
try {
const options = {
method: 'GET',
headers: {
'xc-token': this.config.apiKey || 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
},
};
const urlNoco = this.config.apiUrl;
const response = await fetch(urlNoco, options);
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
}
const data = await response.json();
this.floatingElements = this.processApiResponse(data);
} catch (error) {
console.error('Error fetching floating elements:', error);
throw error;
}
}
processApiResponse(data) {
if (!data || !data.list || !Array.isArray(data.list)) {
return [];
}
console.log(data.list);
// Ensure we only get maximum 2 elements
const limitedElements = data.list.slice(0, this.config.maxElements);
return limitedElements;
}
renderFloatingElements() {
if (!this.container || this.floatingElements.length === 0) {
return;
}
// Additional safeguard: ensure we never render more than maxElements
const elementsToRender = this.floatingElements.slice(0, this.config.maxElements);
// Clean up existing elements and their event listeners
this.cleanupExistingElements();
// Clear existing content
this.container.innerHTML = '';
elementsToRender.forEach((element, index) => {
const floatingDiv = this.createFloatingDiv(element, index);
this.container.appendChild(floatingDiv);
});
}
cleanupExistingElements() {
// Clear existing elements (no need for event listener cleanup with CSS approach)
const existingElements = this.container.querySelectorAll('[data-floating-element]');
existingElements.forEach(element => {
element.remove();
});
}
createFloatingDiv(element, index) {
const div = document.createElement('div');
const cta = element.cta[0]; // Use the first CTA
// Add data attribute for cleanup tracking
div.setAttribute('data-floating-element', 'true');
// Apply CSS classes based on rankPosition
const positionClass = this.getPositionClass(element.rankPosition, index);
div.className = `bantuan-element ${positionClass}`;
div.style.zIndex = this.config.zIndexBase + index;
// Create the link and image
const link = document.createElement('a');
link.href = 'https://cta.ruangguru.com/' + cta.ctaId || '#';
link.target = '_blank';
// Add tracking attributes
link.setAttribute('data-tracking-event-type', 'landing_page__core__item_click');
link.setAttribute(
'data-tracking-context',
JSON.stringify({
product_name: this.product,
cta_action: 'redirection',
cta_action_detail: link.href,
item_type: 'floating',
item_name: element.name || 'Floating element',
item_category: 'payment',
item_position: index,
item_serial: null,
section_type: 'floating_item',
section_position: 'body',
section_name: 'floating_item',
})
);
const img = document.createElement('img');
img.src = element.imageUrl + '?h=200&convert=webp';
img.alt = element.name || 'Floating element';
img.loading = 'lazy';
// Add click tracking
link.addEventListener('click', () => {
this.trackClick(element, cta);
});
link.appendChild(img);
div.appendChild(link);
return div;
}
getPositionClass(rankPosition, index) {
// Define positioning classes based on rankPosition
if (rankPosition === 1) {
return 'bantuan-top'; // Top position
} else if (rankPosition === 2) {
return 'bantuan-bottom'; // Bottom position
} else {
// For additional elements, distribute them evenly
return `bantuan-${index % 2 === 0 ? 'top' : 'bottom'}-${Math.floor(index / 2) + 1}`;
}
}
trackClick(element, cta) {
// Implement click tracking logic here
console.log('Floating element clicked:', {
elementId: element.Id,
elementName: cta.name,
ctaId: cta.ctaId,
targetUrl: cta.targetUrl,
});
}
// Public method to manually refresh
async refresh() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to refresh floating elements:', error);
throw error;
}
}
// Public method to get current floating elements
getFloatingElements() {
return [...this.floatingElements];
}
}
// Initialize the component when DOM is ready
document.addEventListener('DOMContentLoaded', () => {
// Get product and table parameters from data attributes
const container = document.getElementById('bantuan-divs-container');
const product = container.getAttribute('data-product') || 'ruangguru';
const table = container.getAttribute('data-table') || 'rg_floating_icon';
new FloatingDivsComponent(product, table);
});
// Export for use in other modules if needed
if (typeof module !== 'undefined' && module.exports) {
module.exports = FloatingDivsComponent;
}
</script> <div id="wp-install-nudge" style="
position: fixed;
bottom: 0rem;
right: 0;
z-index: 999;
cursor: pointer;
"></div>
<script>
(function (w, d, s, o, f, js, fjs) {
w['Sales-Nudge-Widget'] = o; w[o] = w[o] || function () { (w[o].q = w[o].q || []).push(arguments) };
js = d.createElement(s), fjs = d.getElementsByTagName(s)[0];
js.id = o; js.src = f; js.async = 1; fjs.parentNode.insertBefore(js, fjs);
}(window, document, 'script', 'wpInstallNudge', 'https://cdn-web-2.ruangguru.com/sales-nudge/6198a95130/dist/widget.js'));
wpInstallNudge('init', { targetElementId: 'wp-install-nudge', clientTarget: 'ruangguru_blog' });
</script>
<script>
// note: disabled due to auto reload page
// var lastScrollTop = 0;
// $(window).scroll(function(event){
// var st = $(this).scrollTop();
// if (st > lastScrollTop){
// $('#wp-install-nudge').slideDown( "slow", function() {});
// } else {
// $('#wp-install-nudge').slideUp( "slow", function() {});
// }
// lastScrollTop = st;
// });
// $(document).ready(function () {
// $("#wp-install-nudge").hide();
// });
$('#wp-install-nudge').click(function(){
Analytics.track("promotion__install_nudge__click",
{
user_email: "ruangguru@blog.com",
cta_link: widgetData.dataConfig.target_link
}).catch((err) => {
console.log("tracker error", err);
});
});
</script>
</footer>
<div id="__next"></div>
<script type="speculationrules">
{"prefetch":[{"source":"document","where":{"and":[{"href_matches":"\/blog\/*"},{"not":{"href_matches":["\/blog\/wp-*.php","\/blog\/wp-admin\/*","\/blog\/wp-content\/uploads\/*","\/blog\/wp-content\/*","\/blog\/wp-content\/plugins\/*","\/blog\/wp-content\/themes\/ruangguru\/*","\/blog\/*\\?(.+)"]}},{"not":{"selector_matches":"a[rel~=\"nofollow\"]"}},{"not":{"selector_matches":".no-prefetch, .no-prefetch a"}}]},"eagerness":"conservative"}]}
</script>
<script>
async function getCtaDetails(ctaIds) {
const endpoint =
" https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/CTA/views/CTA?offset=0&limit=10&where=(ctaId,in," + ctaIds.toString() + ")";
try {
const response = await fetch(endpoint, {
headers: {
"xc-token": "-hG2nBDJzSj0agSgNtcJx97M4F02y54nUMoY6plJ",
},
});
const data = await response.json();
const ctaList = data?.list || [];
const ctaMap = new Map();
for (const ctaData of ctaList) {
ctaMap.set(ctaData.ctaId, ctaData);
}
return ctaMap;
} catch (error) {
console.error("Error fetching CTA details:", error);
return new Map();
}
}
async function replaceCTA() {
const regex = /{{cta\((‘(.*?)’|“(.*?)”)\)}}/g;
const bodyHTML = document.body.innerHTML;
const matches = Array.from(bodyHTML.matchAll(regex));
const ctaIds = matches.map((match) => {
let ctaId = match[2] ?? match[3];
return ctaId;
});
const ctaMap = await getCtaDetails(ctaIds);
const replacedHTML = bodyHTML.replace(regex, (match, _inner, ctaId1, ctaId2) => {
const ctaId = ctaId1 ?? ctaId2;
const ctaData = ctaMap.get(ctaId);
if (ctaData) {
return `<a href="https://cta.ruangguru.com/${ctaData.ctaId}" target="_${ctaData.targetType}" style="position:relative;display:inline-block;">
<img src="${ctaData.imageUrl}" loading="lazy" alt="${ctaData.altText}" />
</a>`;
} else {
return match;
}
});
document.body.innerHTML = replacedHTML;
}
</script>
<meta name="author" content="Ruangguru Tech Team">
<!-- Google Tag Manager (noscript) -->
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-PVNLZFT" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
<!-- Tracker -->
<script type="text/javascript" src="https://cdn-web-2.ruangguru.com/landing-page-web/public/staticpages/global-assets/js/cta.js"></script>
<script src="https://unpkg.com/@dotlottie/player-component@latest/dist/dotlottie-player.mjs" type="module"></script>
</body>
</html>