Peningkatan kesadaran masyarakat Indonesia terhadap environment sustainabilitytelah mencapai tingkat yang cukup tinggi. Selain itu, terdapat juga korelasi positifantara corporate sustainability terhadap valuasi saham perusahaan di Indonesia.Kedua hal ini mendorong pemerintah untuk membuat standarisasi penilaianefisiensi produk peranti pengkondisi udara (AC) yang di jual di Indonesia. Salahsatu bentuk upaya tersebut adalah dengan dikeluarkannya Peraturan Menteri ESDMNo 7 Tahun 2015 tentang penerapan standar kinerja energi minimum danpencantuman label tanda hemat energi untuk peranti pengkondisi udara. Dengandikeluarkannya Permen ini, timbul kebutuhan akan psychrometric chamber yangmampu mengetes peranti AC dalam kondisi yang sesuai dengan standar-standaryang telah ditetapkan. Salah satu bagian dari psychrometric chamber yang memilikiperan vital dalam memindahkan kalor adalah sistem water loop. Sistem water loopini harus mampu mengkondisikan ruangan indoor agar bertahan di temperatur 27°Cdan RH 47%, dan mengkondisikan ruangan outdoor agar bertahan di temperatur35°C, keduanya dengan beban pemanasan dan pendinginan yang hidup. Penelitianini bertujuan untuk merancang suatu sistem water loop yang mampumengkondisikan udara yang ada di dalam psychrometric chamber agar mencapaiketentuan standar yang telah ada untuk kapasitas AC yang mencapai 27.000 BTU

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The increased awareness of corporate sustainability among Indonesians has reached

a high level. Additionally, there is a positive correlation between corporate

sustainability and the valuation of company shares in the Indonesian stock market.

Both of these factors have encouraged the government to standardize the energy

efficiency measurement of air conditioning products sold in Indonesia. One

example of this effort is the issuance of the Minister of Energy and Mineral

Resources Regulation No 7 of 2015, concerning the application of a minimum

energy performance standards and the inclusion of energy-saving labels on air

conditioning devices sold in Indonesia. The issuance of this regulation arose the

need for a psychrometric chamber that is capable of testing air conditioning devices

in conditions that comply with predetermined standards. A component of the

psychrometric chamber that has a vital role in transferring heat between the

chamber and the environment is the water loop system. The water loop system must

be able to condition the indoor chamber to withstand a temperature of 27°C and

relative humidity of 47%, as well as maintaining the outdoor chamber at a

temperature of 35°C, both with a live heat and cooling load. This study aims to

design a water loop system that is capable of conditioning the air inside of the

psychrometric chamber to comply with existing standards for air conditioning units

of up to 27.000 BTU/h capacity.