We know that in HVAC chilled water system we use different configuration of piping lay out in order to optimise energy usage and other parameters so that it can meet the energy codes as well as fulfill certain criteria such as initial cost, control complexity etc. etc. Here I am presenting a tabulated chilled water … Read morePrimary Secondary and Tertiary Pumping Systems – Advantages and Disadvantages.
BY this knowledge one can know if his designed air velocity is O.K with the pragmatic approach. The pragmatic air velociy with in the space is listed below. Room Air Velocity (fpm) – (m/s) Reaction by Occupants Application (0 – 16) – (0 – 0.08) Complaint about stagnant air NONE. (25) … Read moreOccupied Zone Room Air Velocities.
We know that after throttling the refrigerants cool. But how it does cool is a scientific miracle. What happens when the pressure drops from the throttling device, the liquid refrigerant vaporizes (small part) taking the latent heat of vaporization from liquid itself. Let us make a case study of R22 refrigerant. At 110°F (43.3 °C), … Read moreWhat is Net Refrigeration Effect
Evaporative cooling of the space has been in use for a long time. In earlier days people use to water the door and window curtains and due to natural ventilation OR through forced ventilation (man powered using hand fans), evaporative cooling was achieved. But in modern days there are equipment such as Dessert Coolers and … Read moreEvaporative cooling load calculation
As we know that light plays an important role in dressing a building especially at night, so that we can see the objects around and in modern days it is also used to beautify the buildings and surroundings.But mostly Lights are used for seeing the things around and make the space comfortable in the sense … Read moreInternal Lighting Load for different Spaces in a building.
In this post I would like to share the HVAC Units including chillers capacity ranges. It will be helpful when ever one desires to select the unit as per building heat load. So, He will know what options he has to select the Units. Here goes the mouse for the cat to catch. Window Air … Read moreHVAC Units with their Capacity range
To make the day good for myself, I would like to say that I am not at all favoring any of the companies for their products listed here. I just want to list the names of the companies as per the products which are normally used by Building services Engineers with in Indian market. Here … Read moreList of companies for Building Services with in India