Heating - Solar air heater - Industrial - Transpired-plate

Template assignment

Base Case

• 6,700 m² industrial facility, requires 6,200 m³/h of fresh air and operates full-time
• Set-point of 21°C
• Roof and wall insulation levels are 3.5 and 2.1 m² - °C/W respectively
• Ventilation air heated by 70% efficient natural gas burner, fuel cost is $0.40/m³
• Temperature of delivered air can range from 18.5°C to 40°C

Proposed case

• New ventilation air pre-heater is to be a black transpired plate solar air heating system mounted on 144 m² of available vertical wall
• Wall faces 20° east of south
• The percentage of time that the heating ventilation system is used are as follows:
  

• Assume a 0.70 wind sheltering coefficient (this could be done by multiplying each of the wind speed values by 0.70 in the climate data section of the Start worksheet)
• Incremental cost of solar collector is $20,000 (cost of solar collector is $45,000 and cost of conventional cladding is $25,000)

Other opportunity

• A government incentive is applied to the installation cost of the solar collector

Solution

The worked-out solution is the data file selected from within the RETScreen Project Database. The user automatically downloads the Project Database file while downloading the RETScreen software.