
	Trending ▼ ICSE CBSE 10th ISC CBSE 12th CTET GATE UGC NET Vestibulares ResFinder

Chapter 3.4 - HVAC and Refrigeration System

22 pages, 34 questions, 0 questions with responses, 0 total responses,

	bee_energy	+Fave Message
	Profile Timeline Uploads Q & A

Home > bee_energy >

Formatting page ...

4. HVAC and Refrigeration System 4. HVAC AND REFRIGERATION SYSTEM Syllabus HVAC and Refrigeration System: Vapor compression refrigeration cycle, Refrigerants, Coefficient of performance, Capacity, Factors affecting Refrigeration and Air conditioning system performance and savings opportunities. Vapor absorption refrigeration system: Working principle, Types and comparison with vapor compression system, Saving potential 4.1 Introduction The Heating, Ventilation and Air Conditioning (HVAC) and refrigeration system transfers the heat energy from or to the products, or building environment. Energy in form of electricity or heat is used to power mechanical equipment designed to transfer heat from a colder, low-energy level to a warmer, high-energy level. Refrigeration deals with the transfer of heat from a low temperature level at the heat source to a high temperature level at the heat sink by using a low boiling refrigerant. There are several heat transfer loops in refrigeration system as described below: Figure 4.1 Heat Transfer Loops In Refrigeration System In the Figure 4.1, thermal energy moves from left to right as it is extracted from the space and expelled into the outdoors through five loops of heat transfer: Indoor air loop. In the leftmost loop, indoor air is driven by the supply air fan through a cooling coil, where it transfers its heat to chilled water. The cool air then cools the building space. Chilled water loop. Driven by the chilled water pump, water returns from the cooling coil to the chiller s evaporator to be re-cooled. Refrigerant loop. Using a phase-change refrigerant, the chiller s compressor pumps heat from the chilled water to the condenser water. Condenser water loop. Water absorbs heat from the chiller s condenser, and the condenser water pump sends it to the cooling tower. Cooling tower loop. The cooling tower s fan drives air across an open flow of the hot condenser water, transferring the heat to the outdoors. Bureau of Energy Efficiency 71

Related ResPapers
Chapter 1.3 - Energy Management and Audit
by bee_energy

Chapter 3.6 - Pumps and Pumping System
by bee_energy

Chapter 4.1 - Boilers
by bee_energy

Chapter 4.13 - Waste Minimisation and Resource Conservation
by bee_energy

Formatting page ...

Tags : Bureau of Energy Efficiency, BEE, National Productivity Council of India, NPC, Energy Audit, Certified Energy Manager, Certified Energy Auditor, EM & EA, bee papers, bee sample papers, bee books, portal for bee india, bee question bank, bee question papers with answers, bee model test papers, solved board question papers of last year, previous years solved question papers, free online solved question paper, india sample questions papers, last 10 years papers, guess sample questions papers, important questions, specimen / mock papers, 2020, 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010, 2009, 2008, 2007, 2006, 2005.

bee_energy chat

Horizontal lines at:
Guest Horizontal lines at:
AutoRM Data:
Box geometries: