Question

Write short notes on the following:

(a) Thermal insulation
(b) Conserving energy​

Answer 1

Answer:

• Thermal insulation is the reduction of heat transferbetween objects in thermal contact or in range of radiative influence. ... The insulating capability of a material is measured as the inverse of thermal conductivity (k)
• Energy conservation is reducing the amount of energy used for different purposes. ... In general, energy conservation reduces the energy consumption and energy demand per capita. This reduces the rise in energy costs, and can reduce the need for new power plants, and energy imports.

Answer 2

Answer:

(a)Thermal insulation is the reduction of heat transfer (i.e., the transfer of thermal energy between objects of differing temperature) between objects in thermal contact or in range of radiative influence.

(b)Energy conservation is the effort made to reduce the consumption of energy by using less of an energy service. This can be achieved either by using energy more efficiently or by reducing the amount of service used. Energy conservation is a part of the concept of Eco-sufficiency.