Conwallz

PRIZES WORTH Rs. 15,000 TO BE WON!!

Orders for metal slabs (reasonable prices) can be placed to the event managers 10 days in advance(only for campus students)"

Introduction

Heat Transfer is that part of engineering which dictates the energy transfer that may take place between material bodies due to temperature difference. The event here encapsulates the three basic modes of heat transfer namely conduction, convection and radiation. 

Event Specifications

The participants are required to make a miniature wall of required dimensions using minimum of two thermal conductors (1-1000 W/m-k) so as to maximize the temperature difference between the front face (one facing the heat source) and the back surface of the wall. The time for which heat will be supplied is 10 minutes. The heat source will be of 2000W- 2500W.

There are three rounds in the event:

1. Pre Elimination Round
2. Elimination Round
3. Final Round

Pre Elimination Round

The participants are required to submit an abstract for the model throwing light on the following aspects:

• Theoretical dimensions of the wall.
• Values of k (thermal conductivity) for the conductors used.
• Value of contact resistance to be provided (if air gap not given take it to be .2micrometer).
• Details of the fins, the expected change in the temperature due to the fins and the reasons for adding the fins. (Maximum 2).
• If any liquid is used give the value of its thermal conductivity k as well as its heat transfers co-efficient h.
• The selected students will be informed of the same through an e-mail and/or an sms.

Elimination Round

•  The wall should be rectangular in area with specifications 20cms*15cms (error of     +-1cm). The width should be of 5 cm (error of 0.2cms).
•  The fin(s) placed should not exceed the volume of 20cc.
•  The material used to create the wall should lie in the conductivity range of 1-1000W/m-k.
•  The voids inside the wall (between the two materials) should not exceed the gap of 0.1 cm.
•  Only regular shaped fins are allowed namely –> cube, cuboids, cylinder, pyramidal, cones and any of their combinations.
•  Leaving the front and the back surfaces the remaining surfaces will be insulated by us.
•  The heat source will supply heat to the front surface of the wall. Temperature will be calculated at the front surface and the back surface. The top 10 contestants with maximum temperature difference will qualify for the next round.
• The points will be awarded as follows:

Details of Points Allocation

Final Round

• The most important change in this round is that heat source will be placed on both at both the surfaces.
• Minimum temperature difference will be considered in this case.
• Points will be awarded in the same manner as in the Elimination round.
• The same wall should be used for both the rounds, the metal slabs and other add-ons (if any) can not be changed for the final round.

Arena Specifications

The event will be held in a closed room with no other heat sources to facilitate better accuracy in readings.

Model Specifications

The wall should be rectangular in area with specifications 20cms*15cms (error of +/- 1cm). The width should not exceed 5 cm (error of 0.2cms). The fin(s) placed should not exceed the volume of 20cc. The material used to create the wall should lie in the conductivity range of 1-1000W/m-k.  

Eligibility

All students of engineering or science stream with a science background in +2. Basic knowledge of heat transfer mode is also needed. 

Rules

• The team should consist of minimum 2 members and maximum of 4 members.
• The contestants should submit the required abstract before January 25th, 2010 for the Pre-Elimination round.
• In the Elimination Round the participants are required to maximise the temperature difference between the front and the back surfaces.
• The voids inside the wall (between the two materials) should not exceed the gap of 0.1 cm.
• The cuboids have to be made in such a way that they have through holes at the 4 corners and can be easily joined by nuts and bolts (will be provided).
• Only regular shaped fins are allowed, namely cube, cuboids, cylinder, pyramidal, cones and any of their combinations. The contestants must provide the dimensions and calculations of the fins before.
• Fin temperature won’t be used in calculating the temperature difference.
• No insulations should be done by the participants. The remaining surfaces of the miniature wall will be insulated by us.
• Top 10 contestants will reach the Final Round.
• For the Final Round, the heat source will be provided on both the sides and the minimum temperature difference between the two surfaces will be calculated.

Judging Criteria

After the Elimination Round the participants with maximum temperature difference will reach the next round. The points will be awarded as mentioned above.

Same pattern of ponts allocation will be followed for the Final Round also.

Top 10 contestants will reach the final round.

NOTE: Points will be awarded in both the final and elimination rounds. Total points will be calculated by adding the points of both the rounds of the respective 10 participants. One with maximum points will win the event, in case of a tie the points of the final round will be considered to judge the winner.

Certification Policy

•  The top three Participants will be awarded cash prize. The amount will be soon uploaded.
•  The participants who qualify for the final round will be given Certificate of Merit.
•  The remaining participants will be given a Participation Certificate.

Event Managers

You can get in touch with any one of us:

Mehul Golwala
[email protected]
+91 9960363883

Anoop Sasikumar
[email protected]
+91 992396041