Chilled Beams vs VAV vs 4-Pipe FCU — HVAC Distribution Choice for Indian Commercial By MEPVAULT Editorial Team · MEP Consultant · HVAC · 11 May 2026 Reading time ~ 9 min · Originally published: 01 May 2026 […]
Hospital HVAC Ventilation — NBC vs ASHRAE 170 vs NABH 5th Edition By MEPVAULT Editorial Team · MEP Consultant · HVAC / Healthcare · 11 May 2026 Reading time ~ 9 min · Originally published: 06 May 2026
MEPVAULT // FIGUREWind Direction Effects on MEP Equipment — High-Rise Building Elevation StudyCooling TowerDG StackCFD AntennaNESWPrevailing SW (40%)SW prevailing 3.5 m/srecirc zone — DG re-entry riskDESIGN RULES:• Place CT 1.5×bldg-height windward of stack · Stack 3 m above
// MEPVAULT ASHRAE 62.1 — VRP MIN OUTDOOR-AIR CALCULATION TABLE 6.2.2.1 + VENTILATION RATE PROCEDURE USE Rp L/s·person Ra L/s·m² DENSITY (/100m²) V_BZ FOR 100m² (L/s) Office (occupied) 5 0.06 20 5×20 + 0.06×100 = 106 Conference room
MEPVAULT // FIGUREFire Pump & Storage — NBC 2016 vs NFPA 20/22 vs IFCParameterNBC 2016NFPA 20/22IFC 2018Pump duty Class A B-127 m³/h @ 70 mequivalent120 GPM @ 230 ftTank capacity high-rise200 m³ min60-min × demand30,000 USGStandby pumpRequiredRequired UL/FMRequiredDG
MEPVAULT // FIGUREChiller Performance — IPLV (kW/TR) vs Capacity for Indian Climate (Delhi Annual Hours)500.51750.53000.64250.75500.76750.88000.8IPLV (kW/TR)Chiller capacity (TR)Centrifugal R-1233zd VSDScrew R-134a VSDAir-cooled scrollCentrifugal beats screw above ~400 TR in Delhi. Air-cooled penalty is consistent 30-40% across capacity range.
