Navigation Directory
Tools Portal Sitemap & Engineering Index
Comprehensive directory of all 20 verified engineering calculators, category discipline hubs, and technical calculation engines available on tools.rsele-hvac.com.
🏛 Portal Hubs & Categories
Tools Portal Central Hub →
Interactive dashboard with real-time live search, engineering discipline filters, and quick launch cards.
⚡ Electrical Engineering Hub →
Substation transformers, HT/LT power cables, APFC capacitor banks, diesel generators, and earthing conductors.
❄️ HVAC & Cleanrooms Hub →
Preliminary cooling loads, ISO Class 5–8 cleanrooms, equal friction ductwork, chilled water hydronics, and AHU ESP.
⚡ Electrical Power Calculators (IS & IEEE Compliant)
Tool 1: Transformer Sizing →
Sizes 33kV/11kV transformers per IS 2026 / IS 10028 with prospective secondary short-circuit fault levels.
Tool 2: Cable Sizing & Voltage Drop →
Computes load ampacity, voltage drop, and derated capacity for XLPE/PVC cables per IS 7098 / NBC 2016 SP 30.
Tool 3: APFC Capacitor Bank →
Calculates target power factor correction kVAR and estimated Discom low PF penalty savings per IS 13340.
Tool 4: DG Set Sizing & Inrush →
Calculates prime/standby kVA capacity evaluating steady loading and largest motor starting inrush per ISO 8528.
Tool 5: Earthing Conductor Strip →
Calculates thermal short-circuit cross-section for GI, Copper, and Aluminum flats per IS 3043:2018 Table 6A/6B.
Tool 11: Busbar Sizing & Thermal Stress →
Sizes continuous ampacity and short-circuit withstand for Al/Cu flats, with peak electrodynamic support forces.
Tool 12: Commercial Solar PV Sizing →
Estimates DC solar array (kWp), string inverters, annual generation, and carbon offsets per MNRE and IEC 62548.
Tool 13: Lighting Lux & Lumen Method →
Computes luminaire quantities, working-plane Lux, and evaluates ECBC 2017 space Lighting Power Density (LPD).
Tool 14: Motor Starter & Protection →
Coordinates Main/Delta/Star AC-3 contactors, thermal overload relays, and backup MCCBs for DOL and Star-Delta.
Tool 15: UPS Battery Bank Sizing →
Sizes VRLA/SMF battery banks with IEEE 485 aging factors, string arrangements, float chargers, and UPS kVA.
❄️ HVAC & Cleanroom Calculators (ASHRAE, ISO & NBC Compliant)
Tool 6: HVAC Cooling Load (TR) →
Preliminary building envelope, sensible, latent, and ventilation cooling load screening per ASHRAE Fundamentals.
Tool 7: Cleanroom ACPH & HEPA →
Calculates circulating airflow and modular H14 HEPA filter counts for ISO Class 5–8 cleanrooms and hospital OTs.
Tool 8: Equal Friction Duct Sizing →
Solves rectangular duct width and aspect ratio from ceiling clearance using Huebscher and SMACNA 4:1 limits.
Tool 9: Chilled Water Pipe Sizing →
Sizes Schedule 40 hydronic piping using Hazen-Williams with ASHRAE 90.1 dual screening (V ≤ 8.5 FPS, hf ≤ 4.0).
Tool 10: AHU External Static Pressure →
Calculates cumulative duct and equipment static resistance in Pa, mmWG, and in.wg with 15% AMCA 201 safety margin.
Tool 16: Psychrometric Coil & SHR →
Determines mixed air states, total cooling coil load (TR / kW), sensible heat ratio (SHR), and condensate rate.
Tool 17: Cooling Tower Water Loss →
Calculates condenser flow, range, approach, evaporation, drift, blowdown, and daily makeup water (kL/day).
Tool 18: Staircase Pressurization →
Sizes smoke containment pressurization fans (CFM/CMH) and verifies door opening force (≤ 100 N).
Tool 19: Air Shower & Pass Box Sizing →
Calculates nozzle exit scrubbing velocity (≥ 20 m/s), air change sweeps per cycle, and blower motor rating.
Tool 20: Chiller Plant Lifecycle & Payback →
Evaluates annual kWh savings, power bill reductions, and simple capital payback using AHRI 550/590 4-bin hours.
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⚖ Statutory Notice & Engineering Disclaimer (Tier D Integration)
All calculations, preliminary estimations, and sizing formulas provided on this tools portal are intended strictly for preliminary engineering screening and feasibility verification. Final engineering execution, statutory approvals, and stamped design deliverables must be reviewed and certified by a licensed professional electrical/mechanical engineer in accordance with applicable national standards and local grid authority regulations.