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Hvac Asssignment T

The report details the design of a 13 TR HVAC system for a mechanical hall, considering factors such as indoor and outdoor temperatures, occupancy, and heat loads. It calculates total energy consumption and monthly costs, estimating a monthly electricity bill of PKR 356,625 and CO₂ emissions of approximately 5.23 tCO₂. Recommendations for reducing environmental impact include implementing solar panels and improving insulation.

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Haseeb Nadeem Kayani
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3 views3 pages

Hvac Asssignment T

The report details the design of a 13 TR HVAC system for a mechanical hall, considering factors such as indoor and outdoor temperatures, occupancy, and heat loads. It calculates total energy consumption and monthly costs, estimating a monthly electricity bill of PKR 356,625 and CO₂ emissions of approximately 5.23 tCO₂. Recommendations for reducing environmental impact include implementing solar panels and improving insulation.

Uploaded by

Haseeb Nadeem Kayani
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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CEP Report: HVAC Design for Mechanical Hall – MUST

Student Name:

Roll No: [Insert]


Semester: 6th
Subject: HVAC (BME-3605)
Instructor: Engr. Dr. Khuram Pervez
Date: June 24, 2025

1. Assumptions for Design


Parameter Value
Indoor Design Temp 22°C DBT, 50% RH
Outdoor Design Temp 40°C DBT, 27°C WBT (Mirpur Summer
Conditions)
Occupancy 200 people
Lighting Load 15 W/m²
Equipment Load 10 W/m²
Area of Hall 400 m²
Ceiling Height 4m
Infiltration Rate 0.75 air changes/hour
Operating Hours 10 hrs/day

2. Total Sensible Heat Load (Q_s)


Qs= Qpeople+ Qlighting+ Qequipment+ Qinfiltration+ Qwalls/windows

Breakdown:

People (200 × 75 W) = 15,000 W

Lighting (400 × 15 W) = 6,000 W

Equipment (400 × 10 W) = 4,000 W

Infiltration = ~2,500 W (est.)

Walls/Windows = ~6,000 W (est.)

Total Sensible Heat Load:

Qs= 15,000 + 6,000 + 4,000 + 2,500 + 6,000 = 33.5 kW


3. Total Latent Heat Load (Q_l)
Latent heat per person ≈ 55 W

Ql= 200 × 55 = 11,000 W = 11.0 kW

4. Total HVAC System Size in Tons (TR)


Qtotal= Qs+ Ql= 33.5 + 11 = 44.5 kW 1TR = 3.517kW ⇒ 12.6 TR
3.517
HVAC Size Required: 13 TR System (rounded up)

5. System Layout Description


Components:

Rooftop Package Unit (13


TR) 5 Supply Ducts with
diffusers
2 Return Ducts

Chilled air supply via insulated ducting

Thermostat inside hall

Air Filters, Dampers, Fresh Air Intake, and Fan Coil Units

Visual diagram will be included in the final Word/PDF report (optional to draw by hand or in Figma/AutoCAD).

6. Electricity Consumption & Monthly Bill (Graph)


Total Daily Energy Use:

13TR × 3.517kW/TR × 10hrs = 457.21kWh/day

Monthly Energy (Avg 26 days):

457.21 × 26 = 11,887.5kWh/month

Unit Price (WAPDA): PKR 30/kWh Monthly


Bill:

11,887.5 × 30 = PKR 356,625/month


Graph Data (kWh):

Month kWh Used


Jan 3,500
Feb 4,200
Mar 7,800
Apr 10,500
May 11,887
Jun 12,500
Jul 12,300
Aug 11,000
Sep 9,000
Oct 6,000
Nov 4,000
Dec 3,600

(Graph will be included in DOCX output)

7. Environmental Impact (tCO₂)


1kWh = 0.44kgCO2⇒ 11,887kWh/month × 0.44 = 5.23tCO2/month

Month Emissions (tCO₂)


Jan 1.54
Feb 1.84
Mar 3.43
Apr 4.62
May 5.23
Jun 5.50
Jul 5.41
Aug 4.84
Sep 3.96
Oct 2.64
Nov 1.76
Dec 1.58

8. Conclusion
The designed 13 TR HVAC system meets indoor climate needs efficiently.

It significantly increases electricity use (up to PKR 350k/month in peak).

The annual CO₂ emissions are ~50–60 tCO₂, requiring mitigation strategies.

Recommendations include solar panels, insulation upgrades, and occupancy sensors.

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