Which of the following factor does not affect comfort air conditioning?
There are four important factors affecting comfort air conditioning:
1. Temperature of air
2. Humidity of air
3. Purity of air
4. Motion of air
Air conditioning unit is the equipment used in air conditioning system.
The alignment cicle is marked on the psychrometric chart at
The human body feeds comfortable when the heat stored in the body is
For the condition of equilibrium or thermal neutrality of the body, there should be no stored energy, and hence no change in body temperature. For a feeling of comfort, thermal neutrality is the required condition. Any variation in body temperature acts as a stress signal to the brain which ultimately results in either prespiration or shivering.
The index which correlates the combined effects of air temperature, relative humidity and air velocity on the human body is known as
The heat production from a normal healthy mass when asleep is about
The rate at which body produces heat is called the metabolic rate. The heat produced by a normal healthy person while sleeping is called the basal metabolic rate which is of the order of 60 W. The maximum value may be 10 times as much as this for a person engaged in sustained hard work.
In summer comfort cooling, the air of the occupied space should not have a relative humidity above
The optimum effective temperature for humans comfort is
Which one of the following statements is correct?
The heat lost by the human body in the process of radiation depends on
A person feels comfortable when the heat produced due to metabolism of his body is equal to