Life cycle analysis of multi-split Variable Refrigerant Flow (VRF) system: case study

In this paper a building having ground and first floor located in A.M.U. Aligarh has been selected for HVAC purposes. The total area of building is 18327 square feet. The total cooling load of ground floor and first floor is 149.5 TR. The total cooling load is ground floor is 89 TR and first floor is 61 TR. The total HP outdoor units in VRF system is installed load for the diversity of VRF units is 80–90%. The load is calculated on the basis of occupants, electric loads, exposed area to sun etc. We have found that total HP outdoor unit and TR indoor units are needed. The total consumption of electricity for running VRF units is also calculated. It is found that units electricity is consumed 3, 30, 000 units/year for VRF System and 4, 22, 500 units/year for split system. The life cycle analysis has been also done for useful life of 10 years for split units and 12 years for VRF units. The aim is to create thermally controlled environment within the space of a building envelope by designing and planning a HVAC system for the project with the objective that the system designed and built is cost-wise economical, energy efficient as well as simple, flexible with regard to its operation, maintenance. This document mentions the codes, standards and criteria that will generally be used in the design and constructions of HVAC system for this project.