Question 34 (Textile Engineering & Fibre Science)
On absorption of moisture, the thermal insulation of cotton fabric will
| (A) | Decrease |
| (B) | Increase |
| (C) | Remain the same |
| (D) | First increase and then decrease |
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Frequently Asked Questions | FAQs
What is the thermal insulation of cotton fabric?
Thermal insulation is a material or a system that reduces or slows down the transfer of heat between two objects with different temperatures. Heat always flows from a warmer object to a cooler one until both reach an equilibrium temperature. Thermal insulation works by reducing the amount of heat that can transfer between the two objects, or by slowing down the rate of heat transfer.
There are several types of thermal insulation materials, including natural materials such as wool, cotton, and cellulose, and synthetic materials such as fiberglass, foam plastics, and mineral wool. These materials work by trapping air within their structure, which helps to reduce heat transfer by conduction, convection, and radiation.
Thermal insulation is used in a wide range of applications, from building construction and home insulation to industrial processes and transportation. The goal is to increase energy efficiency, reduce energy consumption, and improve comfort and safety by maintaining a stable temperature and reducing the need for heating or cooling.