Proposal HVAC Defence

7/30/2019 Proposal HVAC Defence

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( PROPOSAL PRESENTATION)

PRESENTED BY

Pramod

Thapa

(064bme625)

Shisir

Pokhrel

(064bme634)

Susheel

Regmi (064bme646)

PROJECT SUPERVISOR:

ASSISTANT SUPERVISOR:


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Problem Statement

Human body is highly sensitive in temperature. Increase and

decease causes several body imbalances like vomiting,

unconsciousness, headache and dizziness.

Decrease in O2 and increase in CO2 in air leads to improper

functioning of respiratory system decreasing metabolic rate of

body.

Contamination of indoor air by dust, odor, toxic gas and

presence and growth of bacteria, fungi, mold, viruses and

mildew may lead to health problems

So, to get rid of above, we require HVAC system

Challenges of design is to minimize cost, maximize efficiencyand to maintain comfortable indoor environment

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Background

History of HVAC&R was started in 1820s by making ice artificially as

an experiment

Willis Haviland Carrier invented the first AC to control the

temperature and humidity of a printing company

Discovery of Freon refrigerant, invention of rotary compressor andHeat pump equipments made AC unit smaller and efficient and allow

cooling and heating cycle to occur in same machine providing cooling

during summer and heating during winter

Today, air conditioners have been said to be a partial cause for thechanges in the South, and for most of us who have experienced its

cooling benefits in times of searing heat waves, it is an invention that

is hard to live without

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Objective

Main Objective:

To design Heating, Ventilating and Air-conditioning(HVAC) system of Commercial Building

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Objectives (cont)Specific Objectives:

To familiarize with different equipment regarding HVACsystem

To carry out cooling and heating load calculation for HVAC

Design

To calculate the estimated requirement ofpipe and duct for

the design of HVAC

To design proper place for duct registers and air flow vents in

each room for optimal air flow by examine through CAD/CAM

simulation

To select appropriate design and equipment for HVAC design

in order to make energy efficient

To estimate cost for HVAC design & installation in Building

To learn the real challenges that may occur during HVAC

design from Architectural, Civil and Electrical perspective

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Methodology

Literature Review

Data Collection andInterpretation

Load Calculation

Detail Design

Equipment Selection

Cost Estimation

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Limitation

Actual field test will not be performed so actualheating and cooling load and actual plant efficiency

will not be identified

Sudden unexpected change in load may not be

observed

Designed material and equipments may not be

available in market which would directly affect the

performance of the system

Designed system may not be eco-friendly

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Expected Outcome

To design energy efficient HVAC system for abuilding

To be well known to the practical air conditioning

system design in actual field

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Literature Review

HVAC SYSTEM

The goal is to provide proper air flow, heating, and cooling to each

room.

A process that simultaneously conditions air, distributes it combined

with the outdoor air to the conditioned space; and at the same time

controls and maintains the required spaces temperature, humidity,air movement, air cleanliness, sound level, and pressure differential

within predetermined limits for the health and comfort of the

occupants, for product processing, or both

Consists of heating units, cooling units, air filter, humidifier,dehumidifier, ducts, etc arranged in sequential order

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Literature Review

Classification of Air Conditioning

Based on Application Comfort air-conditioning

Industrial air-conditioning

Based on Air Conditioning Unit and Distribution System Central station air-conditioning system Unitary air-conditioning system

District air-conditioning system

Based on working Fluid Used

All-water system All air system

Air water system

Direct expansion system

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Action plan

Month Magh Falgun Chaitra Baikash Jestha Ashad Shrawan

Week3rd

4th

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2nd

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Sn. Activites

1 Proposal Preparation

2 Proposal defense

3Data collection and

interpretation

4 Load calculation

5 design of piping and ducting

6 Midterm presentation

7 CAD drawing and analysis

8 Equipment selection

9 Economic analysis

10 Final presentation

11 Report submission

Gantt Chart:

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Cost Estimation

As project is only analysis, it doesn't required any material and

equipment beside data, information and stationary

Content Amount

Stationary 6,000/-

Field visit 5000/-

Miscellaneous 2000/-

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Reference

Arora & Domkundar, 2001,A Course inRefrigeration and Air-Conditioning, 7th Revised

Edition. Dhanpat Rai & Co.

Kreider J. F., 2001, Handbook of HeatingVentilation and Air Conditioning, CRC Press.

Http:// www.wekepedia.com

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Proposal HVAC Defence

Documents