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Welcome to VRF System Design Training Course for

Welcome to VRF System Design Training Course for. System & Sales engineer Pin CAI Akimasa SHIRAI. 1. EQUIPMENT SELECTION. 1-1 EQUIPMENT SELECTION PROCEDURE / LINE-UP 1-2 MODEL SELECTION AND CAPACITY CALCULATION 1-3 RESTRICTIONS ON EQUIPMENT SELECTION.

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Welcome to VRF System Design Training Course for

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  1. Welcome to VRF System Design Training Course for System & Sales engineer Pin CAI Akimasa SHIRAI

  2. 1. EQUIPMENT SELECTION 1-1 EQUIPMENT SELECTION PROCEDURE / LINE-UP 1-2 MODEL SELECTION AND CAPACITY CALCULATION 1-3 RESTRICTIONS ON EQUIPMENT SELECTION

  3. 1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP

  4. 1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP

  5. 1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP ■ INDOOR UNIT LINEUP (1/2)

  6. 1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP ■ INDOOR UNIT LINEUP (2/2)

  7. 1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP

  8. 1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP ■ REQUIRED OPTIONAL PARTS

  9. 1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP

  10. 1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP ■ OUTDOOR UNIT LINEUP Controller Box

  11. 1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP ■ OUTDOOR UNIT COMBINATION ■ CAPACITY RANGE

  12. 1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP

  13. 1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP ■ CONTROLLER UNIT LINEUP

  14. 1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP

  15. 1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP ■ ADAPTOR / CONVERTOR LINEUP

  16. 1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP

  17. 1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP ■ OPTIONAL PARTS (OTHERS) (1/2)

  18. 1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP ■ OPTIONAL PARTS (OTHERS) (2/2)

  19. 1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP

  20. 1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP 7 to 84 14 to 90 7 to 60 174 to 560 181 to 567 7 to 252 ■ OPTIONAL PARTS (BRANCH KIT) (1/3) 90, 91, 180 and 181 are the total values for the indoor unit model code connected downstream. 84 to 173 91 to 180 7 to 90

  21. 1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP ■ OPTIONAL PARTS (BRANCH KIT) (2/3) 2 branches Separation tube 90, 91 180 are the total values for the indoor unit model code connected downstream.

  22. 1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP ■ OPTIONAL PARTS (BRANCH KIT) (3/3)

  23. 1-2 MODEL SELECTION AND CAPACITY CALCULATION

  24. 1-2 MODEL SELECTION AND CAPACITY CALCULATION ■ EXAMPLE

  25. 1-2 MODEL SELECTION AND CAPACITY CALCULATION COOLING HEAT LOAD : 120W / m2

  26. 1-2 MODEL SELECTION AND CAPACITY CALCULATION (TCin)f From capacity table

  27. 1-2 MODEL SELECTION AND CAPACITY CALCULATION Compensation coefficient = 0.903 H = 20m L = 67m

  28. 1-2 MODEL SELECTION AND CAPACITY CALCULATION

  29. 1-2 MODEL SELECTION AND CAPACITY CALCULATION Room 5 (TCin)e < Heat load Change indoor unit

  30. 1-2 MODEL SELECTION AND CAPACITY CALCULATION AU30 8.80 9.43 8.52 (TCin)e > Heat load

  31. 1-2 MODEL SELECTION AND CAPACITY CALCULATION ① ② Sum of ① 68.4 Sum of ② 73.3

  32. 1-2 MODEL SELECTION AND CAPACITY CALCULATION 22HP(AJ*126LATF + AJ*A72LATF) 62.4 68.4 / 62.4 = 109.6%

  33. 1-2 MODEL SELECTION AND CAPACITY CALCULATION

  34. 1-2 MODEL SELECTION AND CAPACITY CALCULATION 22HP(AJ*126LATF + AJ*A72LATF) 62.4 68.4 / 62.4 = 109.6% 68.99 0.903 69.88 x 0.903 = 63.1

  35. 1-2 MODEL SELECTION AND CAPACITY CALCULATION (i) Total indoor unit capacity at design temperature 73.3 (ii) Compensated capacity of outdoor unit63.1 The smaller one of (i) and (ii) 63.1 22HP (AJ*126LATF + AJ*A72LATF) 69.88 0.903 69.88 x 0.903 = 63.1

  36. 1-2 MODEL SELECTION AND CAPACITY CALCULATION I. U.capacity System capacity x Total of I. U. capacity 11.7 11.711.7 11.7 8.12 8.12

  37. 1-2 MODEL SELECTION AND CAPACITY CALCULATION Smaller than heat load

  38. 1-2 MODEL SELECTION AND CAPACITY CALCULATION 22HP ⇒ 24HP 24HP(AJ*126LATF + AJ*A90LATF) 68.0 68.4 / 68.0 = 100.6%

  39. 1-2 MODEL SELECTION AND CAPACITY CALCULATION

  40. 1-2 MODEL SELECTION AND CAPACITY CALCULATION 22HP ⇒ 24HP 24HP(AJ*126LATF + AJ*A90LATF) 68.0 68.4 / 68.0 = 100.6% 73.10 0.903 66.0 Total of indoor unit : 73.3 kW 66.0 12.3 12.3 12.3 12.3 8.49 8.49 12.0 12.0 12.0 12.0 7.44 8.40 Actual capacity ⇒ Heat load

  41. 1-2 MODEL SELECTION AND CAPACITY CALCULATION (System capacity characteristic) Cooling

  42. 1-2 MODEL SELECTION AND CAPACITY CALCULATION (System capacity characteristic) Cooling Indoor temp 19℃WB

  43. 1-2 MODEL SELECTION AND CAPACITY CALCULATION (System capacity characteristic) Cooling Rated capacity ratio 100%

  44. 1-2 MODEL SELECTION AND CAPACITY CALCULATION (System capacity characteristic) Heating

  45. 1-2 MODEL SELECTION AND CAPACITY CALCULATION (System capacity characteristic) Heating Indoor temp 20℃DB

  46. 1-2 MODEL SELECTION AND CAPACITY CALCULATION (System capacity characteristic) Heating Rated capacity ratio 100%

  47. 1-3 RESTRICTIONS ON EQUIPMENT SELECTION

  48. 1-3 RESTRICTIONS ON EQUIPMENT SELECTION ■ CONNECTABLE UNIT IN ONE REFRIGERANT SYSTEM Master Unit Slave Unit Slave Unit

  49. 1-3 RESTRICTIONS ON EQUIPMENT SELECTION ■ MAXIMUM CONNECTABLE INDOOR UNIT (1/2)

  50. 1-3 RESTRICTIONS ON EQUIPMENT SELECTION ■ MAXIMUM CONNECTABLE INDOOR UNIT (1/2) ΣIndoor units capacityOutdoor unit capacity Based on rated cooling capacity

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