Building Design and Meteorology for Bhopal City

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Questions and Answers

What was the outcome of the study by Henning et al. (2001) on desiccant cooling systems?

Reduced energy savings and ineffective humidity control

Increased reliance on conventional energy sources

Significantly enhanced performance of desiccant cooling systems (correct)

No impact on the performance of desiccant cooling systems

What was the primary objective of the study by Luo et al. (2019)?

To compare the performance of different cooling systems

To develop a traditional cooling system

To design a solar-assisted hybrid solid desiccant cooling system (correct)

To investigate the effectiveness of humidification–dehumidification desalination units

What was the outcome of the study by Processes (2023) on hybrid solid desiccant-based M-cycle cooling systems?

Enhanced system performance and higher COP (correct)

Ineffective in high humidity conditions

No significant impact on system performance

Reduced system performance and higher power consumption

What was the mode of operation that showed superior cooling performance and higher COP in the study by Kashif Shahzad et al. (2022)?

Recirculation mode Signup and view all the answers

What was the outcome of the experimental evaluation of a hybrid solid desiccant M-cycle indirect evaporative cooling system by Ali et al.?

Significant improvements in cooling capacity and energy efficiency Signup and view all the answers

What was the benefit of the system developed by Luo et al. (2019) in high humidity conditions?

Enhanced system performance Signup and view all the answers

What was the range of energy savings achieved by the system studied by Ali et al.?

Between 70% to 135% Signup and view all the answers

What was the primary advantage of the system developed by Henning et al. (2001) in hot and dry climates?

Highly efficient and effective humidity control Signup and view all the answers

What is the point of state 1 in the hybrid desiccant cooling system?

Inlet of ambient air to desiccant wheel Signup and view all the answers

What is the benefit of the hybrid solid desiccant cooling system for small-scale commercial office cabins?

It is beneficial for figuring out how the desiccant wheel will be affected during dehumidification under various weather conditions Signup and view all the answers

What is included in the current research work on dehumidification process?

Literature search, research gaps, and experiments Signup and view all the answers

What software is used for numerical simulation of various duct shapes in the dehumidification process?

ANSYS CFX Signup and view all the answers

How are desiccant wheels made by industrial providers?

Using performance-optimized, result-based channel designs discovered using CFD simulation techniques Signup and view all the answers

What is the purpose of analyzing the cooling load in the chosen office cabin?

To get the desiccant wheel diameter and the CFM needed for the size of the office Signup and view all the answers

What is done after identifying research gaps in the current research work?

The analysis of the cooling load in the chosen office cabin is started Signup and view all the answers

What is established in the workroom as part of the research methodology?

An experimental configuration Signup and view all the answers

What is the main topic of discussion in section 3.1 of the content?

Building local on and meteorological information for Bhopal city Signup and view all the answers

What is the main topic of discussion in section 3.12 of the content?

Rate of heat gain from occupants Signup and view all the answers

What is the U-Value of the enhanced window system with additional storage space and an air gap of 25mm or greater in winter with shading?

2.66 W/m2K Signup and view all the answers

What is the purpose of the Latitude Month Correction (LM) Value?

To correct for the latitude of a location in climate calculations Signup and view all the answers

What is the main topic of discussion in section 4.1 of the content?

Geometries of desiccant wheel channel Signup and view all the answers

What is the U-Value of the internal room divider?

4.15 W/m2K Signup and view all the answers

What is the purpose of the CLTD values?

To calculate the heat transfer coefficient for walls Signup and view all the answers

What is the U-Value of the glass sheets that are oriented horizontally in winter with outdoor exposure?

6.93 W/m2K Signup and view all the answers

What is the main topic of discussion in section 5.1 of the content?

Investigation of temperature and humidity levels at various states Signup and view all the answers

What is the heat transfer mechanism between the outside air and outer surface of a wall, as well as between the inner surface and inside air?

Convection Signup and view all the answers

What is the U-Value of the glass panels with no shading in winter?

6.42 W/m2K Signup and view all the answers

What is the purpose of the air film surface or film conductance?

To calculate the heat transfer coefficient for walls Signup and view all the answers

What is the main topic of discussion in section 3.4 of the content?

Fenestration-related overall heat transfer coefficient Signup and view all the answers

What is the U-Value of the one thin plastic sheet with outdoor exposure in summer?

5.68 W/m2K Signup and view all the answers

What is the direction of heat flow in the glass sheets that are oriented horizontally in summer with outdoor exposure?

Downward Signup and view all the answers

What is the U-Value of the internal space divider in winter with an increase in the upward flow of heat?

5.45 W/m2K Signup and view all the answers

What is the formula to calculate the heat gain through an exposed wall?

Qexposed wall (SE) = UA(CLTD)corrected Signup and view all the answers

What is the value of Uglass sheet in the formula for heat gain through glass parapets?

3.97 Signup and view all the answers

What is the direction of the glass parapet that yields a heat gain of 33.91 W?

All of the above Signup and view all the answers

What is the total heat gain through glass parapets on the parapet walls?

101.73 W Signup and view all the answers

What is the average annual temperature of BHOPAL city used in the calculation?

33ºC Signup and view all the answers

What is the value of Ti in the formula for heat gain through glass parapets?

25°C Signup and view all the answers

What is the formula to calculate the heat gain through an exposed wall, substituted with the given values?

Qexposed wall (SE) = 1.069 x 4.653 x 22.5 Signup and view all the answers

What is the value of Qexposed wall (SE) calculated using the formula?

111.91 W Signup and view all the answers

Study Notes

Building Local and Meteorological Information for BHOPAL City

The study involves building local and meteorological information for Bhopal city, which is essential for understanding the climate and weather conditions.

Climatological Data for Temperature and Humidity in Bhopal

The climatological data for temperature and humidity in Bhopal is crucial for determining the cooling load and designing the hybrid solid desiccant cooling system.

Building Structure and Fenestration

The building structure and fenestration play a significant role in determining the heat gain and cooling load of the building.
The fenestration-related overall heat transfer coefficient is an essential parameter for calculating the heat gain through walls and windows.

Heat Gain Calculations

The heat gain through an exposed wall can be calculated using the formula: Qexposed wall (SE) = UA(CLTD)corrected.
The heat gain through glass parapets on the wall can be calculated using the formula: Qglass (SW) = Uglass sheet x Aglass parapet x (To-Ti).
The total heat gain through glass parapets on the wall can be calculated by adding the heat gains from different directions: Qglass parapet = Qglass (SW) + Qglass (NE) + Qglass (NW).

Hybrid Solid Desiccant Cooling System

The study involves the development of a hybrid solid desiccant cooling system for small-scale commercial office cabins.
The system uses a desiccant wheel, an enthalpy wheel, and an evaporating coil to provide cooling and dehumidification.
The system is beneficial for operating in hot and dry climates, providing significant energy savings and effective humidity control.

Research Methodology

The research involves a detailed literature search, identifying research gaps, and conducting experiments and CFD simulations to evaluate the performance of the hybrid solid desiccant cooling system.
The study uses ANSYS CFX software for numerical simulation of various duct shapes utilized in the dehumidification process of desiccant wheels.

Previous Research Work

Henning et al. (2001) explored the potential of solar energy in desiccant cooling cycles, showing that integrating solar energy could significantly enhance the performance of desiccant cooling systems.
Luo et al. (2019) developed a solar-assisted hybrid solid desiccant cooling system, which enhanced system performance by about 10% in power consumption.
Kashif Shahzad et al. (2022) conducted an experimental evaluation of a hybrid solid desiccant M-cycle indirect evaporative cooling system, demonstrating significant improvements in cooling capacity and energy efficiency.

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Description

This quiz covers building design and meteorological information specific to Bhopal city, including climate data, building structures, and heat transfer coefficients.