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Method for calculating PMV of air conditioning system

  • US 5,674,007 A
  • Filed: 03/09/1995
  • Issued: 10/07/1997
  • Est. Priority Date: 03/09/1994
  • Status: Expired due to Fees
First Claim
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1. A method for calculating a PMV for an air-conditioning system having a body sensor and a temperature sensor, the method comprising the steps of:

  • sensing a thermal change a human body senses due to room air circulation using the body sensor, and converting the sensed thermal change into a digital value;

    sensing a room temperature using the temperature sensor, and converting the sensed room temperature into a digital value;

    assigning parameters according to human bodily activities and amount of clothes being worn classified by seasons and times; and

    calculating a PMV using the value of thermal change converted into a digital value, the value of room temperature converted into a digital value, and the parameters, according to the following equation;

    
    
    space="preserve" listing-type="equation">PMV=(a.sub.1 M+b.sub.1 C+c.sub.1)ta-(a.sub.2 M+b.sub.2 C+c.sub.2)S/100-Kwhere,M;

    metabolism,C;

    resistivity coefficient of clothes (Clo) value,ta;

    room temperature,S is the output of the body sensor, anda, b, c, and K are constants.

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