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Commercial Air Conditioner Haier and Higher SYJS-002 Commercial Air Conditioner Haier and Higher Selected Design and Installation for Haier Commercial Air Conditioners Haier Group 2001 Большая библиотека технической документации http://splitoff.ru/tehn-doc.html каталоги, инструкции, сервисные мануалы, схемы. CONTENTS Chapter One Basic theory of air conditioning------------------------------------------1 Section one Basic features of humid air---------------------------------------------------1 1-1 Basic features of humid air---------------------------------------------------------------- 1 1-2 Temperature-------------------------------------------------------------------------------- 2 1-3 Humidity------------------------------------------------------------------------------------ 3 1-4 Enthalpy ------------------------------------------------------------------------------------ 7 Section two Humid air I-d diagram-------------------------------------------------------- 8 2-1 Humid air I-d diagram----------------------------------------------------------------------8 2-2 Application of the I-d diagram----------------------------------------------------------- 11 Section three Environmental conditions--------------------------------------------------16 3-1 Meteorological data of major Chinese cities--------------------------------------------16 3-2 Physiologically required air quality and quantity--------------------------------------16 3-3 Harmful gas, substance and maximum allowable odorous gas and ventilation------ 17 3-4 Pleasant air temperature and humidity range-------------------------------------------19 Chapter two Air conditioning design calculation---------------------------------- 20 Section one Basic methods and requirements-------------------------------------------- 20 1-1 Indoor and outdoor conditions----------------------------------------------------------- 21 Section two Temperature drop (cooling) load calculation--------------------------------25 2-1 Heat load of glazed windows-------------------------------------------------------------25 2-2 Radiation and heat conduction of walls and roofs--------------------------------------27 2-3 Heat conduction of other parts-----------------------------------------------------------40 2-4 Ventilation and leakage-------------------------------------------------------------------43 2-5 Indoor heat (sensible heat � latent heat)----------------------------------------------- 46 2-6 Air pipe loss, fan, safety ratio, by-pass coefficient, sensible heat ratio---------------51 2-7 Humidity loss------------------------------------------------------------------------------54 2-8 A few simple calculation methods for air conditioner temperature drop (cooling)--56 Section three Load calculation during temperature rise (heating)----------------------- 68 Section four Simple calculation of heating pump (temperature drop and rise)-------- 74 Все каталоги и инструкции здесь: http://splitoff.ru/tehn-doc.html Chapter three Commercial air conditioner (MRV)------------------------------------87 Section one How to choose MRV air conditioners--------------------------------------89 1-1 Market object and feature-----------------------------------------------------------------89 Section two Air-cooling heat pump (MRV) air conditioner----------------------------90 2-1 Forms and features-------------------------------------------------------------------------90 2-2 Points needing attention before use------------------------------------------------------ 97 Section three Water-cooling (MRV) air conditioner------------------------------------100 3-1 Points needing attention during choosing----------------------------------------------100 3-2 Selection of unit model-----------------------------------------------------------------102 3-3 Selection of indoor units-----------------------------------------------------------------103 Section four Air purification------------------------------------------------------------107 4-1 Air purifying conditions-----------------------------------------------------------------108 4-2 Air purifying physical concepts---------------------------------------------------------109 4-3 Measure of dust density in the air--------------------------------------------------------110 4-4 Air purifying methods-------------------------------------------------------------------- 111 4-5 Air purifying types----------------------------------------------------------------------- 111 4-6 Special air purification----------------------------------------------------------------- -116 Section five Ventilation----------------------------------------------------------------- 119 5-1 Choice of duct dimension----------------------------------------------------------------119 Chapter four Installation and construction----------------------------------------- 128 Section one Outdoor unit----------------------------------------------------------------129 1-1 Layout of machines and installation design--------------------------------------------129 1-2 Installation of Haier commercial MRV outdoor units--------------------------------- 132 Section two Indoor unit------------------------------------------------------------------138 Section three Noise and vibration-------------------------------------------------------- 142 Section four Tubing engineering-------------------------------------------------------- 148 4-1 Matters needing attention--------------------------------------------------------------- 148 4-2 Tubes of the heat pump system---------------------------------------------------------- 149 4-3 Construction methods-------------------------------------------------------------------- 151 4-4 Refrigerant tube---------------------------------------------------------------------------158 4-5 Tube branch connection------------------------------------------------------------------161 4-6 Welding----------------------------------------------------------------------------------- 168 Все каталоги и инструкции здесь: http://splitoff.ru/tehn-doc.html 4-7 Cleaning of the refrigerant tube--------------------------------------------------------- 169 4-8 Flare-tube connection-------------------------------------------------------------------- 170 4-9 Flange connection-------------------------------------------------------------------------171 4-10 Connection of indoor and outdoor refrigerant tubes----------------------------------172 4-11 Leakage test------------------------------------------------------------------------------174 4-12 Vacuum extraction drying-------------------------------------------------------------- 176 4-13 Refrigerant filling and makeup---------------------------------------------------------179 4-14 Refrigerant tube insulation------------------------------------------------------------- 181 Section five Electric wiring and trial run-------------------------------------------------183 5-1 Matters needing attention----------------------------------------------------------------183 5-2 Electric wires (outdoor unit)-------------------------------------------------------------184 5-3 Electric wires (indoor unit)--------------------------------------------------------------188 5-4 Control and remote control wires--------------------------------------------------------190 5-5 Centralized control----------------------------------------------------------------------- 194 5-6 Trial run ----------------------------------------------------------------------------------- 199 5-7 Trial run adjustment (switch setting)----------------------------------------------------214 5-8 Refrigerant leak---------------------------------------------------------------------------229 5-9 User acceptance -------------------------------------------------------------------------- 231 Appendices------------------------------------------------------------------------------------235 Specifications and installation dimensions-------------------------------------------------237 Humid air I-d diagram------------------------------------------------------------------------242 Все каталоги и инструкции здесь: http://splitoff.ru/tehn-doc.html Chapter One Basic theory of air conditioning Section one Basic features of humid air Any air that contains vapor is called humid air. Vapor always exists in the air, so there is no absolutely dry air in nature. Therefore: Humid air = dry air + vapor Dry air is considered as ideal gas in the engineering thermodynamics. The vapor in humid air has low partial pressure (generally within several tens of millimeters of mercury) but has large specific volume, which can be treated as ideal air in engineering calculation. Humid air can be taken as an example of mixed gases and it is in conformity with the ideal gas law. The relations between the various state parameters can be described by an ideal gas state equation, i.e.: Pv=RT or PV=mRT of which: P � pressure of the gas (Pa) v � specific volume of the gas (m3 /kg) T � thermodynamic temperature of the gas (K) G � gross mass of the gas (kg) V � volume of the gas (m3 ) R � constant of the gas, depending upon the nature of the gas (J/kg.K) Dry air: Ra=287 J/kg.K Vapor: Ra=461 J/kg.K 1-1 Basic features of humid air Humid air is the object of air conditioning. First of all, let us study the basic features. i.e. the physical parameters, such as pressure, temperature, humidity and enthalpy. Pressure Because humid air is composed of dry air and vapor, so, according to Dalton's law, the total pressure is the sum of the partial pressure of the dry air (Pa) and the partial pressure
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