Every lesson has a quiz including where the answer can be found in the course so the student can gauge his/ her own understanding before advancing to the next lesson. Course Handouts Included in this course are: R410A Pressure/ Temperature Chart Refrigeration Cycle Principles which summarize th...
R-410a Superheat & Subcooling Calculator Select Your Desired Quantity R-22 Superheat & Subcooling Calculator Select Your Desired Quantity Gas Forced Air Furnace Troubleshooting Guide Select Your Desired Quantity Duct Sizing Calculator Select Your Desired Quantity Ductulator Select Your Desired Qua...
暖通空调基础知识讲义Introduction to HVAC.ppt,* * * Pressure/enthalpy chart * 70 59 * 70 59 * 70 59 * 70 59 * * * * * * * * * * * * Refrigerants There are many refrigerants available in the market and selecting the most appropriate is sometimes a balancin
and R410a show both temperatures for the same pressure on one line. For most of the current common refrigerants you can also view several additional thermodynamic properties enthalpy, entropy, specific heat, etc. Each refrigerant has chemical name, boiling point, critical pressure, critical temperatu...
charts as well as other physical properties for common refrigerants. Temperature can be displayed in degrees Celsius or Fahrenheit. Bubble and Dew Pressures are provided on the same line of the PT chart. User selectable settings include refrigerant type, temperature (F or C), and pressure (psig...
PT Chart Commercial Package Units Commercial package air conditioners and heat pumps have been the standard for large installations for many decades. Many older R-22 systems are still in operation. NRI offers R-22 and R-410A for servicing existing installations. R-407C, R-422B, and R-422D...
Bad thermistor click here to see Temp/Ohm chart and compare.Temp/Ohm chart on page 11 Faulty TXV bulb loss of charge or plug/stuck valve My experienceRefrigerant 410a cooling H-600 PSI L-50 PSI and dropping frost between TXV and air coil, trip on high pressure Heating H-350 PSI L-...
The final step in installing a heating or air conditioning system. Every component is checked and tested for compliance with codes, manuals and manufacturer requirements. Compressor Part of the heat pump or air conditioner unit that controls the pressure applied to the refrigerant, necessary for taki...
Parameter Chart: Performance parameters Model No. HGLA-55 HGLA-85 HGLA-130 Cooling capacity kW 55 85 130 Air volume m³/h 3500 5500 10000 Max air volune m³/h 9000 18600 22600 Supply air pressure Pa 980 980 980 Max supply air pressure Pa 2940 2940 2940...
Parameter Chart: Performance parameters Model No. HGLA-55 HGLA-85 HGLA-130 Cooling capacity kW 55 85 130 Air volume m³/h 3500 5500 10000 Max air volune m³/h 9000 18600 22600 Supply air pressure Pa 980 980 980 Max supply air pressure Pa 2940 2940...