Device for measuring specific heat capacity of product

Abstract

The invention discloses a device for measuring specific heat capacity of a product. The device comprises a measuring drying oven (1), a water container (2), medium water (21), a first temperature sensor (3), a second temperature sensor (4), a preheating drying oven (6), a heat-insulating valve (7) and a connecting passage (8), wherein the water container in which the medium water is filled is arranged in the measuring drying box; the first temperature sensor is arranged in the water container for detecting water temperature of the medium water; the second temperature sensor is arranged in themeasuring drying box for detecting air temperature in the measuring drying box; the air temperature in the measuring drying box changes with change of the water temperature of the medium water through automatic control; the preheating drying box is arranged above the measuring drying box, and the connecting passage with the heat-insulating valve is arranged below the preheating drying box and above the measuring drying box, so that heat loss in a specific heat capacity measuring process is reduced to the greatest extent. Thus, the product is not required to be made into a standard sample block during the measurement of the specific heat capacity; and the aim of measuring the specific heat capacity of the finished product of manufacturing enterprises is fulfilled.

Description

technical field [0001] The invention relates to a device for measuring the specific heat capacity of an object, in particular to a device for measuring the specific heat capacity of a product used by a manufacturing enterprise to test the overall specific heat capacity of a finished product. Background technique [0002] In the prior art to test the specific heat capacity of an object, first cut and sample the object to be tested to make a sample block of standard specifications, and then place the sample block in a constant temperature heating oven to preheat for a period of time, so that the internal and external temperatures of the sample block reach the standard preheating temperature. Then transfer the preheated sample block to the standard medium water with definite quality and definite temperature, measure the temperature rise of the medium water temperature, calculate the heat obtained by the medium water, and then calculate the specific heat capacity of the measured ...

AI Technical Summary

Problems solved by technology

[0003] The method for testing the specific heat capacity of an object in the prior art is applied to a manufacturing company and encounters the following problems: the manufacturing company needs to test the overall specific heat capacity of the finished product, for example, the contacts of switching appliances and components made of bimetallic strips. The object is not composed of the same substance, and it is impossible to take a sample to make a sample block of standard specifications. In addition, if the object to be tested is thicker, the heat balance time required for the internal heat of the object to be tested to transfer to the medium water is longer, and the longer the time , the heat loss of the temperature rise of the medium water through the air will be greater, thereby reducing the accuracy of the detection data; The proportion of heat lost by the object through the air is relatively large, which will also reduce the accuracy of the detection data

Since the heat loss of the measured object and the medium water to the surrounding air during the measurement process is large and cannot be ignored, resulting in a decrease in the measurement accuracy of the specific heat capacity of the product. Problems and Deficiencies of Specific Heat Capacity Test

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