heating ventilating air conditioning hvac

... CHUẨN QUỐC GIA TCVN 5687:2010 Thông gió - điều hòa không khí  Tiêu chuẩn thiết kế Ventilation -air conditioning  Design standards Phạm vi áp dụng 1.1 Tiêu chuẩn áp dụng thiết kế lắp đặt hệ thống ... quy định 7.4 c), tính sử dụng hệ thống 5.2.2 Hệ thống ĐHKK trung tâm khí với xử lý nhiệt ẩm AHU (Air Handling Unit) cần áp dụng phòng có sức chứa đông người phòng họp, phòng khán giả nhà hát, rạp...

Ngày tải lên: 11/09/2016, 22:38

... margins help Heating, ventilation and air conditioning Introduction Menu Heating, ventilation and air conditioning (HVAC) systems control the temperature, humidity and quality of air in buildings ... the space These cool air systems are more correctly referred to as ‘comfort cooling’ Heating, ventilation and air conditioning Energy consumption Heating, ventilation and air conditioning can account ... as explained on page 14 Heating 46% help Computing 8% Heating, ventilation and air conditioning Technology overview Identify your HVAC system HVAC system components Menu HVAC systems vary widely...

Ngày tải lên: 28/05/2014, 14:29

... Costing of HVAC Systems Ari Rabl Section HVAC Equipment and Systems 4.1 4.2 4.3 4.4 Heating Systems Jan F Kreider Air Conditioning Systems Dennis L O’Neal and John A Bryant Ventilation and Air Handling ... Distributed Utilities 3.2 Economics and Costing of HVAC Systems HVAC Equipment and Systems 4.1 Heating Systems 4.2 Air Conditioning Systems 4.3 Ventilation and Air Handling Systems 4.5 Electrical Systems ... in the life cycle of a building is the operation of its space conditioning systems — heating, ventilation, and air conditioning (HVAC) — dwarfing the initial cost of these systems or of even the...

Ngày tải lên: 29/06/2014, 11:20

... pp.69-96 Exhaust air Cooling air Exhaust air Cooling air - Exhaust air Cooling air - - Outdoor air Figure 17 Mixed cooler of multiple stages This system requires moving high air volume flows ... of using outdoor air only (Figure 12) Exhaust air (secondary air) Air Treatment Unit (ATU) Outdoor air (hot) ROOM Tcomfort RHcomfort Recirculation pump Return air (secondary air) Figure 12 indirect ... Issue 1, 2010, pp.69-96 WATER SUPPLY Supply Air Hollow Bricks PRIMARY AIR PVC Casing PRIMARY AIR Baffle PRIMARY AIR SEAL Outdoor Air Figure 24 (a) Outdoor air circulation scheme Figure 24 (b) Operation...

Ngày tải lên: 05/09/2013, 16:10

... Desiccant-Based Air Conditioning Systems 1.4 Thermal Storage Air Conditioning Systems 1.5 Clean-Room Air Conditioning Systems 1.5 Space Conditioning Air Conditioning Systems 1.5 Unitary Packaged Air Conditioning ... CHAPTER INTRODUCTION 1.1 AIR CONDITIONING 1.1 1.2 COMFORT AND PROCESSING AIR CONDITIONING SYSTEMS 1.2 Air Conditioning Systems 1.2 Comfort Air Conditioning Systems 1.2 Process Air Conditioning Systems ... xiii RH PREFACE TO THE FIRST EDITION TX Air conditioning, or more specifically, heating, ventilating, air ventilating, air conditioning, and refrigeration (HVAC& R), was first systematically developed...

Ngày tải lên: 29/10/2013, 20:15

... of dry air, mol nw ϭ number of moles of water vapor in moist air sample, mol nws ϭ number of moles of water vapor in saturated moist air sample, mol Moist air is a binary mixture of dry air and ... where V ϭ total volume of mixture, ft3 (m3) ma ϭ mass of dry air, lb (kg) In a moist air sample, the dry air, water vapor, and moist air occupy the same volume If we apply the ideal gas equation, ... Humidity Ratio The humidity ratio of moist air w is the ratio of the mass of water vapor mw to the mass of dry air ma contained in the mixture of the moist air, in lb/lb (kg/kg) The humidity ratio...

Ngày tải lên: 29/10/2013, 20:15

... Air and water vapour mixtures 227 Air treatment cycles 240 Practical air treatment cycles 255 vi 26 27 28 29 30 31 32 33 34 35 Contents Air- conditioning load estimation 263 Air movement 273 Air- conditioning ... removing heat Air- conditioning: A form of air treatment whereby temperature, humidity, ventilation, and air cleanliness are all controlled within limits determined by the requirements of the air conditioned ... about equal 12 Refrigeration and Air- Conditioning The exception to this is the effect of solar radiation when considered as a cooling load, such as the air- conditioning of a building which is...

Ngày tải lên: 05/03/2014, 19:20

... Fahrenheit Hence, vacuum is the key to absorption air conditioning The absorption system is one of the simplest of all types of automatic air- conditioning systems Though this machine has few moving ... control of a return air bypass damper This system, shown in figure 8, is similar to the system we have just discussed The only difference is that we bypass return air instead of mixed air under light ... off 22 Control of dehumidification with a return air bypass system Figure 11 shows a system which uses a return air bypass damper to control airflow across the D/X coil for dehumidification The...

Ngày tải lên: 05/03/2014, 19:20

... emissions from users of refrigeration and air con­ ditioning equipment including household refriger­ ation, domestic air conditioning and heat pumps, mobile air conditioning, chillers, retail food ... manufacturing of refrigera­ tion and air conditioning equipment is found in the Climate Leaders guidance for Direct HFC and PFC Emissions From Manufacturing Refrigeration & Air Conditioning Equipment C L ... emis­ sions from air conditioning equipment and process or fugitive related emissions Partners should refer to this guidance document for cal­ culating GHG emissions from air conditioning and...

Ngày tải lên: 08/03/2014, 19:20

... Desiccant AirConditioning • Conclusions 9.1 Introduction Air- Conditioning Air- conditioning is a process that simultaneously conditions air; distributes it combined with the outdoor air to the ... FIGURE 9.1.4b A central air- conditioning system: air and control systems for a typical floor Air- Conditioning Project Development and System Design The goal of an air- conditioning/ HVAC& R system is to ... Plumbing Heating, Ventilating, and Air- Conditioning Heat Generation Refrigeration Heat Transfer Air Handling 9-9 Air- Conditioning and Refrigeration Section No 15880 15950 15990 Title Air Distribution...

Ngày tải lên: 14/03/2014, 19:27

... for Heating, Ventilating and Air Conditioning Author: Roger W Haines References: 3- “Automatic Controls for Heating and Air Conditioning Author: Harry J Edwards 4- “Refrigeration and Air Conditioning ... Mechanical Technology Refrigeration and Air Conditioning Topics • Air Conditioning Cycles • Air Conditioning Systems • Fans & Pumps • Water Chillers • Hot Water Boilers • Air Handling Units, Fan Coil Units ... the fields of application of air conditioning systems Describe the different components of air conditioning systems Differentiate, compare between different air conditioning systems Explain the...

Ngày tải lên: 01/04/2014, 00:20

... Rings 418 Air- Channel Diffusers 418 Luminaire Diffusers 418 Room Air Motion 419 Linear Grilles 419 Fans and Mechanical Ventilation 419 Air Volume 419 xii Contents Fans and Blowers 419 Air Volume ... Console-Type Air- Conditioning Systems 466 Installation 466 Service 467 Troubleshooting 467 Review Questions 467 of 17 Various TypesandAir Conditioners Heat Pumps Performance Objectives 470 Gas Air Conditioning ... where it is restricting the airflow An air plenum is a large space above the furnace heating or cooling unit Air- Measurement Instruments The volume and velocity of air are important measurements...

Ngày tải lên: 08/04/2014, 11:38

... Acknowledgement v vii viii The Need for Air Conditioning 1.1 1.2 1.3 The meaning of air conditioning Comfort conditioning Industrial conditioning Fundamental Properties of Air and Water Vapour Mixtures ... W.P (William Pete0, Air conditioning engineering.- 5th ed Air conditioning I Title 697.9'3 Library of Congress Cataloguing in Publication Data Jones, W.P (William Peter), Air conditioning engineering/WP/Jones.- ... of air into a suction opening The coefficient of entry (CE) The discharge of air from a duct system Airflow through a simple duct system Airflow through transition pieces Airflow around bends Airflow...

Ngày tải lên: 08/04/2014, 11:38

... [(2+17+19+20)/15] TÀI LIỆU THAM KHẢO American Society Heating Refrigeration and Air Conditioning ASHRAE Hand Book 2001 Arora, C.P Refrigeration and Air Conditioning Second edition Tata McGraw-Hill Publishing ... Tata McGraw-Hill Publishing Company Ltd 2000 Bureau of Energy Efficiency, Ministry of Power, India HVAC and Refrigeration Systems In: Energy Efficiency in Electrical Utilities, chapter 2004 Compare...

Ngày tải lên: 12/04/2014, 10:23

... AC–8 AIR CONDITIONING SYSTEM – Air Conditioning System Circuit (Lever Type on 2VZ–FE Engine Model) AC–9 AIR CONDITIONING SYSTEM – Air Conditioning System Circuit AC–10 AIR CONDITIONING SYSTEM – Air ... heat parts AC–4 AIR CONDITIONING SYSTEM – Air Conditioning System Circuit AIR CONDITIONING SYSTEM CIRCUIT (Lever Type on 3S–FE Engine FWD Model) AC–5 AIR CONDITIONING SYSTEM – Air Conditioning System ... 3S–FE Engine FWD Model) AC–6 AIR CONDITIONING SYSTEM – Air Conditioning System Circuit (Lever Type on 3S–FE Engine All–Trac/4WD Model) AC–7 AIR CONDITIONING SYSTEM – Air Conditioning System Circuit...

Ngày tải lên: 29/04/2014, 09:07

... of the automotive air- conditioning market, training and qualifications ix Air- conditioning fundamentals 1.1 History of automotive air- conditioning systems 1.2 Introduction to heating and ventilation ... Protection Act Voluntary education – air- conditioning City & Guilds 6048 Motor Vehicle Air Conditioning (Service and Repair) The City & Guilds 6048 Motor Vehicle Air Conditioning certificate is a recognised ... to fresh air mode with the air- conditioning system reduces the humidity of the inside of the vehicle Air- conditioning fundamentals 15 Face ducts Air intake Recirculation door (closed) Air distribution...

Ngày tải lên: 06/05/2014, 11:29

... E124496E01 AC–6 AIR CONDITIONING – AIR CONDITIONING SYSTEM AIR INLET CONTROL SERVO MOTOR AIR OUTLET CONTROL SERVO MOTOR EXPANSION VALVE EVAPORATOR AC AIR CONDITIONING HARNESS BLOWER MOTOR AIR MIX CONTROL ... amplifier detects a problem with the air conditioning system - AIR CONDITIONING – AIR CONDITIONING SYSTEM AC–11 NEURAL NETWORK CONTROL • In previous automatic air conditioning systems, the A/ C amplifier ... Damper BI-LEVEL FACE AIR OUTLETS AND AIRFLOW VOLUME (a) Air Outlets and Airflow Volume AC F F G B G A A B D D D D C E Y E E133944E02 AC–16 INDICATION (MODE) AIR CONDITIONING – AIR CONDITIONING SYSTEM...

Ngày tải lên: 24/05/2014, 13:13