Testing device for thermal resistance of bedding and clothing

Abstract

The invention discloses a testing device for thermal resistance of bedding and clothing. The testing device comprises a constant-temperature room, a dummy model system and a test bed; the dummy model system comprises a dummy model, resistance wires and a copper sheet are arranged on the outer surface of the dummy model, the resistance wires are connected with a heating controller by conducting wires, thermocouples are distributed on the copper sheet and are connected with a multi-channel temperature tester by conducting wires, and the bedding and clothing are placed on the outer surface of the copper sheet; and the constant-temperature room comprises a simple room, an outdoor air conditioning unit, a temperature controller, air supply outlets made of orifice plates, return air inlets made of louvers and an air temperature sensor. The testing device has the advantages that owing to the air supply outlets made of the orifice plates and the return air inlets made of the louvers, upper-supplying and lower-returning airflow is formed, and accordingly a uniform temperature field and a uniform speed field can be formed in the constant-temperature room by the aid of the outdoor air conditioning unit and the control action of the temperature controller; and a value of the thermal resistance of the bedding and clothing can be computed by the aid of a thermal balance principle according to the difference between the temperature of the surface of the dummy model and the temperature of air in the constant-temperature room and heating load required for keeping the temperature of the surface of the dummy model constant.

Description

technical field

[0001] The invention belongs to the field of heat transfer, and relates to a test device for thermal resistance of quilts, which is mainly suitable for testing the thermal resistance of quilts, blankets and other fabrics, so as to solve the problems of heat insulation and heat preservation of quilts and evaluation of human thermal comfort when the human body sleeps at night. . Background technique

[0002] Clothing is one of the most basic needs of human beings. It is an important factor affecting the thermal comfort of the human body when the human body is resting, and it is of great significance to human survival and life. With the development and progress of mankind, people have higher and higher requirements for the comfort of quilts, and at the same time, there are more and more types of quilts, such as cotton quilts, cashmere quilts, duvet quilts and silk quilts. The main function of the quilt is to keep warm from the cold, especially during the winter...

Images