Download Building services ii medd tearm 2021 and more Exams Building and Prefabrication in PDF only on Docsity!
University of Al Bayan FACULTY of civil engineering B.C section Building Services II Mid—term 2021— Student Name: Imadeldain Salih Hassan : Q
In general, it is referred to as the energy that has been
converted from electric potential energy. We can define
electrical energy as the energy generated by the
movement of electrons from one point to another. The
movement of charged particles along/through a medium
constitute current or electricity)say wire (
Meter Fuse Distribution Box: o Main Switch (MCCB – Moulded Case Circuit Breaker). o Trip Switch (RCCB – Residual Current Circuit Breaker). o Circuit Breakers (CBs). Wall Switches Plug Sockets Electrical Wires & Cables.
.SINGLE PHASE. Is a two-wire alternating current (ac) power circuit Two PHASE :an obsolete style of electrical power distribution where two phases are .. provided that are 90° out of phase with each other THREE PHASE :a three-wire ac power circuit with each phase ac signal 120 electrical ,.. degrees apart The difference between a wire and a cable is that the size of the wire is generally small. The larger conductor cross-sectional area (larger than 6 mm2) is called a large wire and a cable, and the smaller (6 mm2 or less) is called a small wire. An insulated wire is Also known as cloth wire. However, cables are Characteristic Types Advantage Ensure Safety Durability Versatility Solid Wires: Single strand wire conductor Stranded Wires:a number of small wires bundled or wrapped together to form a larger conductor. The wire is single insulated or bar conductor that gets
. placed inside the jacket
Energy Consumption Space Requirements & Maintenance Cooling Power ❖What the advantage and disadvantage of Geothermal Air Conditioning System:
✓ Advantages of a geothermal AC system:
Highly efficient in terms of energy usage It has relatively a longer lifespan than other types of Heating & cooling equipment ✓ Disadvantages of a geothermal AC system: Installation depends on the location as loops are Installed in the ground. The setup cost is very high. ❖ What advantage and disadvantage of Portable Air Conditioner? ✓ Advantages of portable ACs are: Quick and simple to set up They can be easily moved around the house They do not require any permanent installation An effective option for spot cooling Easy to store when not needed ✓ Disadvantages of portable ACs are: Such units are noisy during operation Cooling larger rooms is a problem Portable units that come with a hose have to be placed near a window and the hose also obstructs the lower part of your window. ❖ What advantage and disadvantage of Portable Air Conditioner? ✓ Advantages of portable ACs are: o Quick and simple to set up o They can be easily moved around the house o They do not require any permanent installation o An effective option for spot cooling o Easy to store when not needed ✓ Disadvantages of portable ACs are: o Such units are noisy during operation o Cooling larger rooms is a problem
o Portable units that come with a hose have to be placed near a window and the hose also obstructs the lower part of your window. What is the advantage and disadvantage of Smart Conditioners? ✓ Advantages of smart air conditioners: Provide comfort & convenience with numerous features Help save energy ✓ Disadvantages of smart air conditioners: More expensive than regular units. Wi-Fi connectivity is necessary to utilize all the features ❖ What is the advantage and disadvantage of Hybrid / Dual Fuel Air Conditioner? ✓ Advantages of hybrid air conditioning: Maximize indoor comfort and minimize the cost of utility bills Lower your carbon footprint ✓ Disadvantages of hybrid air conditioning: The high cost of initial setup. Breakeven may occur in the long run. What is advantage and disadvantage of Window Air Conditioner? Advantages of Window ACs: Window units are typically less costly and cheaper to operate Simple to install Easy to maintain Do not take up your floor space ✓ Disadvantages of Window ACs : Can be noisy during operation & are visible from outside the home. They obscure the view from a window and must be located close to a suitable electrical outlet. Not all windows support airconditioners, some window ACs are not suitable for casement or irregularly shaped windows. ❖ What advantage and disadvantage of Portable Air Conditioner? Advantages of portable ACs are: Quick and simple to set up They can be easily moved around the house
