Dr. Rupendra Nehete
Aniruddha Banerjee
Ms. Netravati Shetty
Nikhil Sachidanandan
Gaurang Joshi
Abstract
This paper is focused on designing HVAC systems that offer optimal thermal comfort while protecting patients, visitors, and staff from infections in hospitals. To achieve this goal, the authors recommend using ‘Variable Refrigerant Flow’ systems that can control refrigerant flow in indoor units based on demand, enabling multiple indoor units to function efficiently with a single outdoor unit. VRF systems are those efficient HVAC systems which can reduce the energy usage in buildings. The key aspect in the design process includes heat load calculation, in which various parameters of the design space are measured to calculate the required tonnage of refrigeration. The data collected is compiled in a database, and MS Excel is used to perform calculations that enables to select an appropriate HVAC system based on its viability, availability, technical feasibility, and economic feasibility. The piping systems are designed using the single line diagram software. Mc Quay duct sizer software is used to calculate the duct dimensions according to the required CFM. Finally, AutoCAD software is utilized to visualize beam structures, partitions, and optimal placements for the piping system, ductwork, indoor and outdoor units, and other essential supporting accessories. By using these tools, the HVAC system is designed to meet the specific requirements of the hospital and provide optimal thermal comfort.
Keywords- Duct design, Heat load calculation, HVAC system, Piping system, VRF System