Consider the following statements for sensible heat factor:

1. Sensible heat factor will be negative if sensible heat and latent heat are both negative.

2. Sensible heat factor will be negative if sensible heat is negative and latent heat is positive.

3. Sensible heat factor will be negative if sensible heat is positive and latent heat is negative.

4. Sensible heat factor will be negative if sensible heat and latent heat are both positive.

Which of the above statements are correct?

This question was previously asked in
ESE Mechanical 2021 Official Paper
View all UPSC IES Papers >
  1. 2 and 3 only
  2. 1 and 2 only
  3. 1 and 3 only
  4. 2 and 4 only

Answer (Detailed Solution Below)

Option 1 : 2 and 3 only
Free
ST 1: UPSC ESE (IES) Civil - Building Materials
6.3 K Users
20 Questions 40 Marks 24 Mins

Detailed Solution

Download Solution PDF

Explanation:

The sensible heat factor is the ratio of Sensible heat to the Room total heat.

Room total heat = Sensible heat (SH) + Latent heat (LH)

Sensible Heat Factor is given by, 

\(\rm SHF = \frac{{SH}}{{LH \;+\; SH}} \)

From the ratio we can conclude that if both latent heat and sensible heat is either negative or positive, the sensible heat factor will be positive, thus statements 2 and 3 are correct answer.

Latest UPSC IES Updates

Last updated on May 28, 2025

->  UPSC ESE admit card 2025 for the prelims exam has been released. 

-> The UPSC IES Prelims 2025 will be held on 8th June 2025.

-> The selection process includes a Prelims and a Mains Examination, followed by a Personality Test/Interview.

-> Candidates should attempt the UPSC IES mock tests to increase their efficiency. The UPSC IES previous year papers can be downloaded here.

More Load Calculation of Psychrometry Questions

Get Free Access Now
Hot Links: all teen patti master teen patti circle teen patti master gold teen patti wala game