Abstract
High water vapour content in air can cause a number of problems as for human or surrounding materials. For human a highwater vapour can create physiological stress, discomfort, and also can encourage ill health. While, the cause for the environment iscan accelerate the corrosion of metals, accelerate the growth of spores and mould, can reduce the electrical resistance of insulatorsand etc.Desiccant systems have been proposed as energy saving alternatives to vapor compression air conditioning for handlingespecially the latent load and also sensible load. Use of liquid desiccants offers several design and performance advantages oversolid desiccants, especially when solar energy is used for regeneration. The liquid desiccants contact the gas inside the packed towerof liquid desiccant solar cooling system and the heat transfer and mass transfer will occur. This paper is trying to study the humancomfort analysis inside the packed tower of dehumidifier systems. This human comfort analysis consist of human comfort and energythat consume by the system. The results of this paper later on can be used to determine the best performance of the systems.
Highlights
Desiccant systems have been proposed as energy saving alternatives to vapor compression air conditioning for handling especially the latent load and sensible load
High water vapour content in air can cause a number of problems
the cause for the environment is can accelerate the corrosion of metals
Summary
Kandungan air yang tinggi di udara dapat menyebabkan berbagai macam permasalahan untuk manusia dan benda-benda disekitarnya. Kelembaban udara memiliki peran yang sangat besar untuk menghasilkan material dengan kualitas tinggi yang diinginkan. Karena pada kondisi keadaan luar ruangan yang memiliki kelembaban tinggi, sistem pendingin kompresi uap elektrik tidak dapat menyingkirkan kelembaban tanpa pertama-tama mendinginkan udara di bawah temperatur titik embun (dew point) setelah itu dipanaskan kembali (reheating). Metode ini akan menghasilkan kebutuhan energi yang sangat berlebihan dan biaya utilitas yang lebih tinggi.Dengan menggunakan sistem desiccant untuk perlakuan udara dan menyingkirkan kelembaban dari sistem pendingin konvensional sehingga memungkinkan sistem kompresi uap bertemu dengan sistem yang baru tanpa menimbulkan kerugian energi yang parah. Prosesoperasi mendasar dari dehumidifier adalah setelah desiccant cair meninggalkan regenerator dan memasuki tangki penukar panas (heat exchanger) dan setelah itu akan didinginkan dengan menggunakan chiller.Lithium klorida akan didistribusikan ke dalam packed column menggunakan spray head dipercikkan secara merata dengan konfigurasi persegi. Sistem dehumidifikasi udara diperlihatkan pada Gbr., sistem tersebut terdiri dari dua perulangan (loop): loop dehumidifikasi udara dan loop regenerasi desiccant cair, kedua loop tersebut menggunakan konfigurasi aliran berlawanan (counter flow) di packed column
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