Technical Specifications Document - Dairy Storage Room Material to be Stored Location Storage Room Dimensions: Wall materials Plywood Wall/Ceiling Thickness: Cooling system Air conditioning systems FOS (Appendix B) Target Storage Temperature Target Humidity Density Door details Lighting intensity (Appendix A) Types of lights Milk Casino NSW - Australia Length: 10 meters Width: 8 meters Height: 3 meters Three-layer walls and ceiling are constructed using 1 x layer of plywood and 2 x layers of plasterboard. The middle layer is plywood with an additional 10mm thick plasterboard on both sides, adding 20mm to the overall wall thickness. Plywood Walls: 120 millimetres Plywood Ceiling: 150 millimetres Shifting ammonia between gas and liquid using pressure (Chilled air is -22°C; chilled water is 0.2°C -0.5°C, cooling plates -25°C.) Condenser unit with a Fan blower 1.2 Milk storage silos are kept within 1°C to 4°C 85-95% RH 1032.7 (kg/m³) 2m x 2m x 60mm thick hardwood 700 lux Fluorescent lights, with a luminous efficacy of 100 lumens per watt (Im/W). Local Data Use the ASHRAE CLIMATIC DESIGN CONDITIONS to collect local data: https://ashrae-meteo.info/v2.0/ Properties of materials Material Density (kg/m³) Thermal conductance K Hardwood 720 0.16 Plywood 454 0.12 Plaster board 800 0.17 Properties of insulation materials Material Density (kg/m³) Thermal conductance K Polyurethane panel 30-32 0.015 Thermocol 15-30 0.025 Cork 120-160 0.036 (a) Find the refrigeration capacity if no insulation is used for the walls and ceiling. (b) Select insulation(s) for the wall and ceiling to reduce the refrigeration capacity. Evaluate the thickness required for the insulation you selected to reduce the refrigeration load by approximately 30%. (c) Add a 1m x 1m window glass to the room. Use the data collected from previous parts. Assume the internal surroundings surfaces (e.g., walls and ceilings) have the same temperature as the inside temperature, and the external surroundings (landscape, buildings, etc.) are also at the same temperature as the outside temperature. Assume the convection coefficients between air (internal and external) and the glass are the same as the walls and the air. If the glass has an emissivity of 0.9, calculate the rate of heat loss through the glass. Assume steady-state conditions, negligible temperature gradients in the glass, and both inner and outer surfaces exposed to large surroundings.