Heat transfer

DESIGN OF A CENTRAL HEATING SYSTEM
Professor: Tarik Al-Shemmeri.
Student: Ruben Bermejo Palomares
Bw005493
Contents
References................................................................................................................17
Introduction
The house that I designed will be located in the town of Stafford (United Kingdom), the house I design will be about100m2, and will be distribute the way I show you later, for greater energy savings I put my house facing south, which means, the walls of the two main rooms of the house, which will be the bedroom, it'll be facing south, while the part that will be facing north will be the kitchen as we can see later that this part is the part of the house that needed more additional radiators, since the northern partof the house much less natural light enters then the south part, also takes into account this factor to place the lights in the house, for this reason I have more bulbs in the area of the kitchen and dining room than in the rest of the house. Though the weather in England is not going to provide a lot of heat energy for our house, rather small.
The aim of our house will be to get the bestcomfort possible with the least possible consumption of electricity taking into account the environment. To do this try to keep the houses cool in summer and warm in winter.
Collect all necessary data , both thermal data and building/construction data. Source and propose a central heating boiler and “radiator” panels for each part of the building. The materials I used to thebuilt of my home are:
Doors- U-value=3Wm2K
Windows- Double glazing with 6mm air space (13mm)
U-value=3.5Wm2K
Walls-
Inside- 260mm unventilated cavity wall with 105 mm brick outer and inner leaves, with 16 mm plaster. U-value=1.5Wm2K
Outside- 260 mm unventilated cavity wall with 105 mm brick outer leaf and 100 mm lightweight concrete block inner leaf and 16 mm plaster.U-value=0.96Wm2K
Roofs- 19 mm asphalt on 13 mm cement and sand screed, 50 mm woodwork slabs on timber joists and aluminium foil backed by 10 mm plasterboard ceiling.
U-value=0.9Wm2K
Floors- Intermediate floor with 150 mm concrete, 50 mm screed and timber flooring.
U-value=1.87Wm2K
Radiators- The material used for the radiators that I have chosen is aluminium, apart from that these radiatorsare double sided, so you can choose which is the aspect that you want in your home.
The radiators I am going to use in my home have these characteristics:
{draw:frame}
Front opening Front plane
{draw:frame}
www.daunis.es/.../Folletos+*radiadores*+aluminio+BaxiRoca.pdf
Boiler- If we add the consumption of the radiators throughout the house, the result will be of 7542.6 W, so thatthe boiler would be ideal to consume a 8000 W, and it has the following characteristics:
Minimum Flow Rate: 2.7
KW Capacity: 8
Operating Voltage: 240
Net Heat Output BTU: 27,296
Power Input Watts: 8000
Total Heating Element Amps: 33.3
Number of Elements: 2
Element Size Watts: 4000
Maximum Amperage Per Leg: 39.3
SuggestedWire Size (AWG): 6
Suggested Breaker (Amps): 50
{draw:frame}
http://www.pexsupply.com/Argo-AT0824-8KW-Two-Element-Electric-Boiler-27000-BTU-11329000-p
The house is designed on a plane of 100 m ^ 2, taking into account the thickness of the walls, at the end will be less habitable space.
My house is basically composed of 5 rooms, 2 principal bedrooms as I said above, thewalls of these rooms will be facing south, the bathroom, which I located in the center of the house because it is the best site and it will have an easy and quick access from anywhere in the house, the kitchen and dining room will be the site that more heat energy lost, because it communicated with all the rooms of the house and is more open space of the house and a lounge that I suppost that this...