Experimental Study on Heat Transfer Effect of Heat Pipe Grinding Wheel

2013 ◽  
Vol 770 ◽  
pp. 95-99
Author(s):  
Jia Jia Chen ◽  
Yu Can Fu ◽  
Qing Shan He ◽  
Chen Chen ◽  
Wei Zhang
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Heat Pipe ◽  
Thermal Damage ◽  
Transfer Effect ◽  
Working Fluid ◽  
Grinding Wheel ◽  
Rotating Speed ◽  
Enhancing Heat Transfer ◽  
Zone Temperature

High temperature in grinding can cause thermal damage to the workpiece. In order to reduce the grinding zone temperature, a method about enhancing heat transfer based on the rotation heat pipe technology is proposed. In this paper, the heat transfer effect of heat pipe grinding wheel (HPGW) under different conditions such as the rotating speed of grinding wheel, the kinds of working fluid and the film thickness are analyzed. The results show that the HPGW has great superiority of heat transfer under certain conditions.

Effect of Processing Parameters on Heat Transfer Performance of the Heat-Pipe Grinding Wheel

2012 ◽  
Vol 217-219 ◽  
pp. 2480-2483
Author(s):  
Ke Ma ◽  
Yu Can Fu ◽  
Hong Jun Xu ◽  
Jun He
Keyword(s):  
Heat Transfer ◽  
Heat Pipe ◽  
Heat Transfer Performance ◽  
Processing Parameters ◽  
Grinding Wheel ◽  
Transfer Performance ◽  
Filling Rate ◽  
Great Role ◽  
Transfer Experiment ◽  
Rotating Speed

Heat transfer performance of the heat-pipe grinding wheel (HPGW) is mainly depended on the heat pipe in the wheel. In this paper, a basal body of HPGW was developed and a heat transfer experiment was performed to study the effect of the parameters of the heat pipe such as liquid filling ratio and rotating speed on the heat transfer performance of the HPGW. Results show that the heat transfer performance decreases if the liquid filling rate is too large or too small under the same heat source intensity and the optimal liquid filling rate is about 35% of the volume inside the heat pipe. The heat transfer performance of the HPGW is enhanced with the increasing of the rotating speed. The analysis of the results also shows that the heat pipe in the HPGW can play a great role on enhancing the heat transfer in the grinding zone with suitable processing parameters.

Model for Pulsating Heat Pipe With Capillary Wick and Varying Channel Diameter

2004 ◽  
Author(s):  
Brian M. Holley ◽  
Amir Faghri
Keyword(s):  
Heat Transfer ◽  
Heat Pipe ◽  
Momentum Equation ◽  
Channel Length ◽  
Working Fluid ◽  
Pulsating Heat Pipe ◽  
Channel Diameter ◽  
Fill Ratio ◽  
Heating And Cooling ◽  
Enhancing Heat Transfer

Variation in channel diameter is investigated as a means of enhancing heat transfer in a pulsating heat pipe with capillary wick using the model presented here. The model is one-dimensional with slug flow where the momentum equation is solved for each liquid slug. The number and mass of liquid slugs are allowed to vary throughout a simulation. The energy equation is solved both in the wall and wick and in the working fluid. The effects of diameter profile, gravity, fill ratio, and heating and cooling schemes can be studied with the model. Results yield similar trends to what has been experimentally observed. Results also indicate that heat transfer can be enhanced when the diameter of the channel is varied along the channel length, thereby providing increased range of heat load capability, less sensitivity to gravity, and in some cases smaller temperature differentials.

The Effect of a Rotating Heat Pipe in a Brazed Diamond Grinding Wheel on Grinding Temperature

2009 ◽  
Vol 416 ◽  
pp. 274-278 ◽  
Author(s):  
Ke Ma ◽  
Hong Jun Xu ◽  
Yu Can Fu
Keyword(s):  
Heat Transfer ◽  
Heat Pipe ◽  
Transfer Effect ◽  
Grinding Wheel ◽  
Grinding Temperature ◽  
Enhanced Heat Transfer ◽  
Diamond Grinding Wheel ◽  
Diamond Grinding ◽  
New Type ◽  
Measurement Experiment

A new type of brazed diamond grinding wheel with a rotating heat pipe is developed to effectively remove the heat generated in the grinding zone meanwhile minimize the pollution and contamination of the environment. A grinding temperature-measurement experiment of titanium alloy was conducted to evaluate enhanced heat transfer effect of the rotating heat pipe on the grinding zone. The experiment results show that, when grinding using the wheel with heat pipe the grinding temperature decreases 30% than that using the wheel without heat pipe.

An Innovative Cooling Method for Grinding Process Based on Heat Pipe Technology

2014 ◽  
Vol 1017 ◽  
pp. 393-398
Author(s):  
Jia Jia Chen ◽  
Yu Can Fu ◽  
Qing Shan He ◽  
Wei Zhang ◽  
Yan Bin Zhu
Keyword(s):  
Heat Transfer ◽  
Heat Pipe ◽  
Contact Zone ◽  
High Efficiency ◽  
Plain Carbon Steel ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Enhancing Heat Transfer ◽  
Core Idea ◽  
Cooling Methods

The core idea of the existing cooling methods in grinding process is making a large quantity of coolant into the contact zone. However, the practical quantity of coolant injected in the grinding zone is limited, and the large amount of coolant employed can cause pernicious effect to human health and the environment, and will largely increase the expenses. In order to solve this problem, an environmental friendly idea about enhancing heat transfer in the contact zone based on heat pipe technology is put forward in this paper. The new system, heat pipe grinding wheel (HPGW), based on this high-efficiency cooling technology is developed and its heat transfer principle is illustrated. Eventually grinding experiments with HPGW were carried out to verify the cooling effect by comparing with non-HPGW in grinding plain carbon steel. Results show that using HPGW can significantly reduce the grinding temperature with no coolant.

Experimental study of thermohydraulic characteristics and irreversibility analysis of novel axial corrugated tube with spring tape inserts

2020 ◽  
Vol 92 (3) ◽  
pp. 30901
Author(s):  
Suvanjan Bhattacharyya ◽  
Debraj Sarkar ◽  
Ulavathi Shettar Mahabaleshwar ◽  
Manoj K. Soni ◽  
M. Mohanraj
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Thermal Performance ◽  
Working Fluid ◽  
The Novel ◽  
Heat Exchanger Tube ◽  
Heat Transfer Augmentation ◽  
Corrugated Tube ◽  
The Impact ◽  
Exchanger Tube

The current study experimentally investigates the heat transfer augmentation on the novel axial corrugated heat exchanger tube in which the spring tape is introduced. Air (Pr = 0.707) is used as a working fluid. In order to augment the thermohydraulic performance, a corrugated tube with inserts is offered. The experimental study is further extended by varying the important parameters like spring ratio (y = 1.5, 2.0, 2.5) and Reynolds number (Re = 10 000–52 000). The angular pitch between the two neighboring corrugations and the angle of the corrugation is kept constant through the experiments at β = 1200 and α = 600 respectively, while two different corrugations heights (h) are analyzed. While increasing the corrugation height and decreasing the spring ratio, the impact of the swirling effect improves the thermal performance of the system. The maximum thermal performance is obtained when the corrugation height is h = 0.2 and spring ratio y = 1.5. Eventually, correlations for predicting friction factor (f) and Nusselt number (Nu) are developed.

Experimental study of heat transfer and start-up of loop heat pipe with multiscale porous wicks

2017 ◽  
Vol 117 ◽  
pp. 782-798 ◽  
Author(s):  
Xianbing Ji ◽  
Ye Wang ◽  
Jinliang Xu ◽  
Yanping Huang
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Heat Pipe ◽  
Loop Heat Pipe ◽  
Start Up

Experimental Study on Heat Pipe Radiator in Cooling Electronic Apparatus

2012 ◽  
Vol 197 ◽  
pp. 216-220
Author(s):  
Zhong Chao Zhao ◽  
Rui Ye ◽  
Gen Ming Zhou
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Heat Pipe ◽  
Heat Dissipation ◽  
Heat Transfer Performance ◽  
Electronic Device ◽  
Transfer Performance ◽  
Air Velocity ◽  
Electronic Apparatus ◽  
Operational Temperature

To solve the cooling problem in modern electronic device, a kind of heat pipe radiator was designed and manufactured in this paper. The heat transfer performance of heat pipe radiator and its relationship with air velocity were investigated by experimental method. The experimental results show that the heat pipe radiator can meet the temperature requirement of electronic device with the power range from 40W to 160W. To keep the operational temperature of electronic device with power of 160W under 75°C，the air velocity should be keep at 1.7m/s. The heat dissipation performance of heat pipe radiator was enhanced with the air velocity increased from 0.2m/s to 1.7m/s.for the electronic equipment with power of 160W.

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