by HARSHAL SURANGE, ACR PROJECT CONSULTANTS PVT. LTD.

 TECHNOLOGY WISE, THEY GIVE US :  TECHNICAL REQUIREMENTS FOR AN ENERGY EFFICIENT COLD STORAGE – WITH TYPICAL CASE DESIGN  TECHNICAL DATASHEET : USEFUL FOR VETTING A GIVEN DESIGN  UNDERSTANDING OF VARIOUS IMPORTANT PARAMETERS IN DESIGNING EQUIPMENTS AND THE STORAGE IN GENERAL

 OVERALL LAYOUT : ANTE-ROOM, STAIRCASE, PLANT ROOM POSITIONING ETC.  BASIC DATA SHEET IN THE SPECIFIED FORMAT FOR ALL EQPTS.  HEAT LOAD CALCULATION FORMAT  IMPROVING INSULATION THICKNESSES FOR GENERAL APPLICATION OF COLD STORES LIKE WALLS / CEILING / FLOOR  IMPORTANCE TO IMPORTANT DESIGN CONSIDERATIONS LIKE EVAP TEMP, COND TEMP, TD, ETC

Type of insulation MaterialWall Ceiling/ roof U value = 0.24 W/m 2 K Floor U value = 0.29W/m 2 K External U value = 0.27W/m 2 K Partition U value = 0.58W/m 2 K ρ Density Kg/m 3 K (at 10 0 C) W/mK Thickness mm Thickness mm Thickness mm Thickness mm EPS15 min PUF38 min XPS## Phenolic foam *** Mineral wool *** Bonded fibre glass/ glass wool*** *** Recommended only with vapour barrier and metal or FRP cladding min 0.5 mm TCT ## Recommended in conformance to ISO/FDIS 4898:2008(E) for properties of XPS used for thermal insulation of buildings, Categories II, III & IV only. “Note for partition wall: Insulation thickness for partition walls should be provided on both the sides of walls. Incase of sandwich panel the insulation thickness shall be the total of the insulation provided on both the sides.”

 SELECTION OF COMPRESSORS (W+S)  RECOMMENDED EVAPORATION AND CONDENSING TEMPERATURES  DATA SHEET FOR COMPRESSORS  Compressor Make & Model Nos.Comp. RPM Operating Parameters Evap. SST. / Cond. Temp ( O C) Refrigeration Capacity (KW) Motor Rating. (KW) Total Electric Power. (BkW) Remarks Working /Standby COMPRESSORS

 SELECTION OF CONDENSERS  DESIGNER TO PROVIDE DETAILS IN THE FORMAT PROVIDED CONDENSERS Condenser Make & Model Nos. Operating Parameters Cond.Temp.(SD T)/ in/out water temp( O C) &flow (lps) Condenser Capacity (kW) Electric Fan /Pump Motor Rating (kW) Total Electric Power (BkW) Remarks Working /Standby

 SELECTION PARAMETERS FOR ACUs  IMPORTANCE GIVEN TO CORRECT EVAPORATION TEMP, AIR FLOW, TEMP DIFFERENCE, FIN SPACING ETC. ACU Make & Model Nos. Operating Parameters Evap. (SST) & TD* ( O C) Cooling Capacity (kW) Air Flow (CMH) & Face Velocity (M/S) Material of Coil Tubes & Fins Fin pitch (mm) Total Fan Electric Power (BKW) AIR COOLING UNITS

 ELECTRICAL INSTALLATIONS – POWER FACTOR TO BE >0.95  LIGHTING & ENERGY EFFICIENCY FEATURES  DETAILS OF ENERGY SAVING DEVICES TO BE PROVIDED LIKE VFD, CFL, PLC CONTROLS ETC.  COP – INCLUDED AS A TOOL IN DATASHEET FOR UNDERSTANDING ENERGY EFFICIENCY.

Details of Energy Saving devicesBrief Description and Savings Light Fixtures CFL/LED Natural Lighting for general areas VFD for fans / compressors Refrigerant Controls and Automation Air Purger Power Factor Controller Energy recovery heat-exchanger for Ventilation System Renewable/ Solar Energy e.g. PV lighting PLC Control, & Data Acquisition Any other features e.g. water recycling, rain water harvesting …

 STANDARDS PROVIDE ONLY THE BASE OR MINIMUM REQUIREMENTS FOR THE COLD STORAGES. THESE CAN ALWAYS BE IMPROVED UPON  INHERENT FEATURES OF THE DATASHEET HELPS IN UNDERSTANDING THE DESIGN PROPOSED BY THE DESIGNER