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<p>Dear All</p>
<p>I'm using a single speed fan and a thermostat for cooling system connected to a multi-zone building. thermostat turns on the fan whenever the inside temperature is higher than 20 C. I'm going to use variable speed fan to have the same 20 C temperature and
but lower energy consumption. Using the variable speed fan, how it should be controlled to have same 20 C temperature in building ? I mean that when it should work at part load and when it works at full load and how ut us implemented? </p>
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<p>Thank you</p>
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Ahmad abbasianzadeh</div>
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Solar energy Researcher</div>
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<b>Harrisburg, Pensylvania</b></div>
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