air conditioning and refrigeration hvac code of practice

Ministry of Housing & Utilities and Urban CommunitiesHousing & Building National Research Center

Building Physics & Environment Institute

Air Conditioning and Refrigeration

HVAC Code of Practice



(HBRC) is the only authorized body responsible for developing and disseminating knowledge, technology and

codes of practice & technical specifications for the building and construction sector in Egypt.



Codes of Practice

National CodesRegional Codes

(Arabic Code)

- Energy Efficiency in (residential – commercial -governmental) buildings.

- HVAC and District cooling.- Ventilation.- Thermal Insulation.- Moisture Insulation.- Lifts and Escalators.- Electrical connections.- Green buildings (Under publication)

- Energy Efficiency in (residential – commercial -governmental) buildings.

- HVAC.- Lifts and Escalators.



In 1999, Ministerial Decree No. 104 was issued to form the Standing Committee for the Preparation of theEgyptian Code for Air Conditioning and refrigeration under the chairmanship of Prof. / Essam Eldin KhalilHassan.

Specialized sub-committees were established for the Egyptian Code for air conditioning and refrigeration.

In 2004, the Egyptian HVAC code was issued and ratified by the EgyptianParliament and implemented under Ministerial Decree No. 139.



Part one : General

Pat two : Air Conditioning, Ventilation and Heating

Part three : Refrigeration

Part four : Control and Electric System

Part five : District Cooling

Part six : Refrigerants for Safe Environmental Practices



• General Requirement for air conditioning and refrigeration

• External climatic conditions.

• Symbols

• Terminology

• Definitions

• Engineering conversions



• Design conditions for air conditioning systems

• Equipment

• Testing, balancing and approving air conditioning systems

• construction Documents for air conditioning

• Energy Efficiency in air conditioning

• Refrigerants for safe environmental practices



• Thermal load for cooling and freezing stores

• Applications of industrial cooling

• Cooling equipment

• Insulation for cooling and freezing stores

• Cooling circuits, assemblies and tests

• Cooling and heating using absorption refrigeration

• Safety systems, fire and earthquakes protection

• Methodology for analyzing the economic performance of cooling stations



• Design conditions of automated control systems

• Components of automated control systems

• Principles and methodology of design applications

• Building Management System

• switchboards for Power supply, operation and control



Air Conditioning and Refrigeration HVAC Egyptian Code of Practice

Part 5District Cooling



Prof. Mohammed Alaa El-din Olama - President

Prof. Essam El-din Khalil Hassan

Prof. Ahmed Solyman Huzayin

Prof. Sayed Shebl Mohamed

Prof. Mahmoud Ali Hassan

Eng. Mohammed Mansour Ibrahim

Eng. Amin Youssef Tawfiq Hegazy

Eng. Mamdouh Abdelkader Abu Taleb

Members of the Fifth Special Sub-Committee (District Cooling)



Chapter 26 General Characteristics and Financial Indicators of District Cooling/Heating System

Chapter 27 Chillers Plants

Chapter 28 Chilled/Hot Water Distribution Systems

Chapter 29 Energy Transfer Stations (ETS)

Chapter 30 Basic Keys for the Design Process

Chapter 31 Stratified Thermal Energy Storage (TES)

Chapter 32 Integrated Control & Monitoring System (ICMS)

Content



Chapter 26

General Characteristics and Financial Indicators of District Cooling/Heating System

• Advantages of district cooling/heating system

• Infra-structure and climatic conditions to be taken into considerations

• Recommended design considerations

• General economic conditions for district cooling/heating system and method of

calculating Tarriffs

• Economical model for district cooling/heating project



Chapter 27

Chillers Plants

• Types of chillers

• Parallel/in-series chillers arrangement

• Cooling towers

• Water treatment

• The function of thermal energy storage (TES)



Chapter 28

Chilled/Hot Water Distribution Systems

• Hydraulic design of chilled/hot water networks for district cooling/heating

systems

• Pumping schemes

• Pumps & pressure controls

• Materials & components of distribution system



Chapter 29

Energy Transfer Stations (ETS)

• Selection of delta-T for ETS

• Compatibility of performance between ETS and the district cooling/heating plant

• Selection of direct or indirect energy transfer stations

• Consideration for flat plates heat exchangers

• Special considerations for control valves

• Building control system and its relation with ETS



Chapter 30

Basic Keys for the Design Process

Thermal loads calculations

• Design temperatures and water temperatures difference

• General layout

• Licenses

• Integration between district cooling with different other utilities

• Design and operation



Chapter 31

Stratified Thermal Energy Storage (TES)

• Energy cost saving

• Equipment size reduction

• Capital cost saving

• Back-up capacity



Chapter 32

Integrated Control & Monitoring System (ICMS)

• Field devices layer

• Automation layer

• Communication layer

• Central operating layer



• Currently, trials for an effective mechanism for awareness and applying the HVAC codeare being done to be mandatory. Also, training to the largest number of specialists isfocused on, through issuing a certificate by HBRC as it is the only authorized body inEgypt entrusted with the license of the code.

• In addition, the possibility of licensing the district cooling code is being studying.

• The possibility of licensing the practice of the operators of air conditioning andrefrigeration stations is also being studying through preparation of a code for GoodPractice Standards and Rehabilitation - A Guide for Operators of Air Conditioning andRefrigeration Systems.