%���� HVAC sometimes referred to as climate control is a process of treating air to control its temperature, humidity, cleanliness, and distribution to meet the requirements of the conditioned space. You must be logged in to read the answer. With today’s energy conservation concerns, buildings are constructed … endobj
7 0 obj<>>>/Parent 6 0 R/MediaBox[0 0 612 792]>> Thermal comfort refers to the subjective feeling of temperature in an environment. For residence or private office=0.9 Developed by Willis Carrier, the inventor of modern air conditioning, the psychrometric chart is fundamental to building science - and perhaps the topic of another article.) )��s����s���� ��MK�sNfy.�E��zw�����S��]Fwcy���Y~!y�c�� ��&(������� 9��W��9f< ^��!C�ȿ�=T&��S�xZ�7hS If sufficient data on required conditions is not available then DBT is assumed as 21°C and relative humidity as 50%.The sensible heat factor is generally kept as follows: %PDF-1.4
Dance hall or gym=0.6Find answer to specific questions by searching them here. The system which effectively controls these conditions to produce the desired effects upon the occupants of space is known as an air conditioning … endobj Auditorium or theatre=0.7 In this application, air at 35 °C and 60% relative humidity will be conditioned into the human comfort zone, with the thermodynamic process plotted on a psychrometric chart.
Go ahead and login, it'll take only a minute.According to ASHRAE, ‘Human comfort is that condition of mind, which expresses satisfaction with the thermal environment’.Thermal comfort refers to the subjective feeling of temperature in an environment. To do this, we will first cool the air to 14 °C (this removes some of … �26S075SI�r � Depending on geographic location and building construction, various types of interior climate control systems help ensure that interior spaces are maintained at comfortable levels year-round. These processes may be employed to maintain specific … Conditioning Air into the Human Comfort Zone Introduction Humans generally feel comfortable between temperatures of 22 °C to 27 °C and a relative humidity of 40% to 60%. endstream This leads to perceptions of a better indoor environment, he said. Thus strategic use of scents within a space can promote desired behaviors and emotional states, promoting a … air) also has to be controlled and for the comfort of human beings along with these two important parameters, air motion and cleanliness also play a vital role. Let's look at all four factors of comfort now: Temperature. It is known that the physical properties of air can be controlled by cooling, heating, humidification, and dehumidification. In order to calm patients undergoing an scan with an MRI device, the rooms housing the machines are often lightly scented with vanilla. 5 0 obj <>stream It's the best way to discover useful content.Download our mobile app and study on-the-go. If the primary function of the system is to satisfy the comfort requirements of the occupants of the conditioned space, the process is referred to as comfort air conditioning. Optimum levels of thermal comfort helps in maximizing productivity Temperature, humidity, purity and motion of air are the important factors which affect the human comfort. 9 0 obj <>stream The goal of the heating, ventilating, and air conditioning (HVAC) system is to create and maintain a comfortable environment within a building. Impurities in air can be avoided by eliminating the sources of impurities, flushing out spaces with clean air, and by filtering the air to remove impurities. x�� \�ם��m��K�q3f�S3���.l�vȒ̅U.�b_�E�Z�Z`�b�E�&�/PQ �|!�dH1��E�H�&h��x`x��gf�7����? ventilation and air conditioning”. The desirable conditions may be temperature, humidity, dust particle level, odor level, and air motion.
Air conditioning can be defined as the treatment of indoor air in order to control certain conditions required for human comfort. �!��ԠB����~Bs�6���� �ceo��T�p"훃�a���x���RG�Ȱ���et�w뿕vI�4� x��h��߉���}����y,͏���p��{=�963"��i04��I � �L�ܩ¡;��C4�0�;�.5����n#�5Rs�^��%e�P�V�����[6A��5� x�+�r �*T0T0 B�����f����� �9 � X�s��-+|����C��l<4�YS�� ,Lv�}�`U��m&ΌN��p�|��釱��=�H�h�4>Sgj�Գ���e��,����A�M����+�F�6Ǧ�����;� LЌ=Y��M4%WC�Y��m�Oƙ���:e�gMV�1~Vs�o0r�&h�z�od0?F�q���y`�k4sH& �8������63h$�E� �k`�?hRS�?�����YF��W��1k��?j��v,�9b���������� N,��a
Functional classification
Comfort air conditioning : - Aim at giving max human comfort to occupants/users of conditioned space
Industrial air conditioning : - The coditioning creates, controls and maintains such an environment inside the conditioned space, that it would suit best to the needs of industry.
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