International Journal of Innovative Research and Development

Satish Malviya , V. N. Bartaria

Abstract

Heat exchanger is a device which transfer the energy from hot fluid to the cold fluid with high rate and reasonable cost. The present study was Performed on the Finned tube Heat exchanger. The finned tube having dimension of of (40 cm) overall length, which contains (32 cm) copper tube of (16 mm) outer diameter & inner diameter(13.5) with fin pitch (10 fin/in), fin outer diameter(34.5mm) and fins thickness (0.1 mm) and the tubes material ad braas. Fin type crimp ischolar_main soldered. The objective of the present study was to evaluate the performance of the finned tube at ambient condition and the condition like in hot summer. Through this study found the performance of finned tube increases with increase the mass flow rate of air. The different plots obtained from the data collected at different conditions of mass flow rate of water and air at both ambient condition and hot condition.

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Sathish Malviya , V. N. Bartaria

Abstract

This article experimentally and numerically investigates the thermal performance of a Crimped finned tube completely enclosed in a duct, which is cooled through an air cooled heat exchanger. The air in the heat exchanger includes external flow paths. The external air driven by the rotation of the centrifugal fan goes through the heat exchanger mounted on the top of the frame. The internal air absorbs heat released from the hot water inside the tube and then transfers the heat to the heat exchanger through the motion of centrifugal fan. Several test rigs have been set up to measure the performance of the fan and the finned tube. The Fluent software package is adopted to analyze the complicated thermal-fluid interactions among the centrifugal fan, centrifagal fans, heat exchanger, U-tube manometer. The measured data, including the fan performance Curves and the temperature profiles of the heat exchanger, show good agreement with the simulated results. A detailed discussion is also included to improve the finned tube cooling Performance. Wide range of finned tube heat exchangers is constructed with the help of specialized.
European technology, they have large heat transfer area, which further improves their efficiency. We use seamless or crimped tubes in copper aluminum, mild steel brass, aluminum brass, copper and nickel that meet the tema standards, for the construction of these heat exchangers. The tube ends can be welded or brazed. Quality checks like pneumatic, x-ray hydraulic, penetration testing are carried out in order to confirm to international quality standards. Firmed tube heat exchangers are also available in customized specifications as per the clients' requirements.

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Sachin Nikam , V. N. Bartaria

Abstract

In the air conditioning systems the variations in temperature is most important part for load calculations, India is a tropical country where variations in environmental temperature is between 0°c to 45°c. In corporate sector the load calculations for air conditioner inside glass chamber & variation in temperature at different duct altitude of chamber is very essential. It is also very much required to calculate the heat effect of occupants and accessories for proper load calculations. In this dissertation work, I have been investigated the effect of on the thermal comfort conditioning inside the glass chamber assuming moderated office work condition. The variation in temperatures with respect to horizontal distance & vertical distance at particular test point location inside the glass chamber at particular heights of duct has been investigated for properly sealed glass chamber.
The experiment has been investigated inside 2.66m × 304m × 2.72m glass chamber using thermocol insulated roof & according to that temperature have been calculated the essential load for conditioner neglecting humidity effects inside the glass chamber at varying altitude of air conditioning duct.

Keywords

Air Distribution, Temperature Distribution, Thermal Comfort

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Sushil Chourey , V. N. Bartaria

Abstract

A heat exchanger is a component that allows the transfer of heat from one fluid (liquid or gas) to another fluid. In a heat exchanger there is no direct contact between the two fluids. The heat is transferred from the hot fluid to the metal isolating the two fluids and then to the cooler fluid in this Study the performance parameter such as air velocity, pressure drop, discharge of air and water, temperature of air and water, we provide heating coil in the duct for increasing the temperature of air.

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Jitendra Raghuwanshi , V. N. Bartaria

Abstract

HVAC engineers have never stopped developing air distribution systems that are able to provide the occupants with high air quality and optimal thermal comfort, One of the critical problems regarding the thermal comfort is draught risk, especially when ventilation system is operated at a high flow rate. A new air distribution system using the entire ceiling as the air inlet is used in the livestock house. However in term of indoor space occupied by human being, the research is limited. This work endeavours to describe and testifY the performance of a diffuse ceiling ventilation system in a typical office room. The overall objective is to investigate the possibility of using the diffuse ceiling as an air distribution system in an office building. A full scale measurement is conducted in a climate chamber to analyze the performance of diffuse ceiling ventilation system used in an office room. Air temperature, air velocity, surface temperature, pressure loss and ventilation effectiveness are measured under different test conditions.

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Prachi Bhatnagar , V. N. Bartaria

Abstract

Power plant condenser (a huge complex shell-and-tube heat exchanger) is one of the most important auxiliary equipments in a power plant. The thermal efficiency of a power plant can be increased by enhancing the heat transfer rate of a condenser, this can be achieved by reducing the turbine exhaust pressure. Considering this, the designing of surface condenser is an important aspect towards making thermal power plant efficient. In our present work, the author has considered a conventional design procedure and empirical correlations of surface condenser for the analysis of critical parameters like pressure drop, dirt factor, overall heat transfer coefficient, velocity of circulating water, rate of condensation, outlet temperature of water, number of tubes, tube pitch, outer diameter of tube, weightflow of steam and water, etc. These parameters directly affect the performance of a condenser or the unit where this condenser is employed. The results are calculated by the programme made in computer codes and are represented graphically.

Keywords

Surface Condenser, Condenser Design, Performance Analysis, Heat Exchanger

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Prachi Bhatnagar , V. N. Bartaria

Abstract

Surface condenser is also known as power plant condenser and is one of the most important auxiliary equipment in a power plant. The thermal efficiency of a powerplant can be increased by enhancing the heat transfer rate of a condenser, this can be achieved by reducing the turbine exhaust pressure. Considering this, the designing of surface condenser is an important aspect towards making thermal power plant efficient. In our present work, the author has considered a conventional design procedure and empirical correlations of surface condenser to have a design review of surface condenser with all the critical parameters which directly or indirectly affects the condenser performance, The author also focuses the effects of key parameters on surface condenser performance.

Keywords

Surface Condenser, Condenser Design, Heat Exchanger

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