Ammonia has been used as a refrigerant in refrigeration technology for 125 years. Ammonia’s thermal properties mean it uses less energy than other refrigerant options in large industrial applications. At the same time, unlike most other refrigerants, it has a characteristic odor that can be detected by humans even at very low concentrations. state the advantages and disadvantages of the following refrigerant. Ammonia refrigeration is a cost-efficient way to comply with industry standards and keep your products and goods at an optimum temperature. Fig.1. One attractive option is an ammonia/carbon dioxide cascade refrigeration system. The duration of refrigerants use. Ammonia is a 3-10% more efficient refrigerant than CFCs, so an ammonia-based system requires less electricity, resulting in lower operating costs. This not only can kill plants but also the entire ecosystem -Using Chemical fertilizers constantly will result a toxic build up of chemicals such as arsenic,cadmium, and uranium in the soil. It’s always a good idea to label your pipes, but ammonia pipes, in particular, should always be marked. As a refrigerant, ammonia has four major advantages over CFCs and HCFCs: There are two key disadvantages to using ammonia as a refrigerant: Minnesota Web Design by The Minnesota Website Co, https://www.goodway.com/hvac-blog/2009/08/ammonia-as-a-refrigerant-pros-and-cons/. An ammonia-based refrigeration systems costs 10-20% less to build than one that uses CFCs because narrower-diameter piping can be used. Advantages and Disadvantages of VARS 1. Two factors, however, mitigate this risk: ammonia’s … For example, Coca-Cola's vending machines at the 2006 FIFA World Cup in Germany used refrigeration utilizing CO 2. The disadvantages of these products are mainly toxicity (NH3), flammability (HC) and high pressures (CO2). Each of these compressor styles accomplish the same task of increasing the pressure of ammonia vapor. 8 xX�|��������)����i( O؈�[��(���d(cK�%h�ˎ��w��Z���. Per One Tonne of refrigeration, the quantity of refrigerant used is high compared to other systems. Disadvantages of ammonia systems. Even the slightest traces of ammonia in the air can be perceived easily. Two factors, however, mitigate this risk: ammonia’s distinctive smell is detectable at concentrations well below those considered to be dangerous, and ammonia is lighter than air, so if any does leak, it will rise and dissipate in the atmosphere. The nitrogen component of ammonia was first recognized as an important fertilizer around 1840, and ammonia was first used as a refrigerant around 1850. Household ammonia, by comparison, is only about 10% ammonia by weight mixed with water. 4. Ammonia is safe for the environment, with an Ozone Depletion Potential (ODP) rating of 0 and a Global Warming Potential (GWP) rating of 0. 5. �z���;��#; ���c0d �!Ȫ9@����=O��6 ��n����^���gX��Rm���b��GD��6���C�m��8��vWV\�q�6%�\V_o�U���'� ?gY Due to ammonia’s hygroscopic nature, it migrates to moist areas of the body, including the eyes, nose, throat and moist skin and may cause severe burn injuries. Ammonia refrigeration systems are, as the name implies, a system of refrigeration that uses ammonia. They provide the motivating force that moves the refrigerant through the system. ~�b���K�y���C������+7V�����2�P�ݼV��sN�V�E�=&��zL�F�q� �pr�o��p[n����7k��m����&���� ߛu����r��7{Ni��#�wi�˗��&��y�)�OiQ��na���V"\��b�\��5���� o��iK������y�E J�'��{�!�q�Y��$�a2Z-���m��#VKO�Z{9���(h%8�R����=��Ei)��ir�������:T ୦�(�q�'gGG�9K # y����ٯۀ��^O'��y��j1� 0���s� p���P4�P�oBѺ�P�ywh�q@�K ������g�3 ����;jN� `8� ��-0F�K5�����������Ḕֵ4j0�,߻��4�n@��C.�x������#��d�v��!�����vg՝T��*{������ Reference: https://www.goodway.com/hvac-blog/2009/08/ammonia-as-a-refrigerant-pros-and-cons/. According to ASHRAE and the International Institute of Ammonia Refrigeration (IIAR), ammonia is a cost-effective, efficient alternative to CFCs and HCFCs that is also safe for the environment. Pros and Cons of Ammonia. In a compound with air, ammonia is ignitable only within a very narrow span of concentrations — and this only in combination with high-ignition energy. 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