EcoCentre, The Living Building Exercise

Since its completion in 2008, the “Green” building known as EcoCentre, was a victim of an economic downturn. As a result, EcoCentre experienced a period of decline, foreclosure and eventually new ownership.

The building itself is not to blame and its intentions were good. From inception to completion, it was built as planned and delivered on schedule. Though in retrospect, alternative choices could have been implemented at the design phase that may have yielded a different outcome. We know that many buildings, both of traditional and “Green” construction, experienced “symptoms” due to the financial crisis. However, in this case, certain flawed design decisions were made which ultimately had a greater negative impact than just the bad timing of bringing new product to market.

Identify and explain in detail at least (2) possible areas of significant concern whereby the design and development of the structure, including the materials, as well as technologies used may have contributed to the poor financial performance of this asset. This is not a number crunching exercise, therefore no financial analysis is needed. Your astute observations should be sufficient to enable you to draw your own conclusions.

Sample Solution

quid from the tanks to the engine. The LNG has to be in gas phase at the engine inlet so the system requires a vaporizer. The LNG has to be regulated to serve the engine with the exact amount of natural gas and to keep the system safe, therefore is a valve room. The system is required to have double walled fuel lines to the engine, when the pipe ruptures the second wall will hold the natural gas. And the system needs the engine for propulsion. For the diesel system is less required, we could use normal tanks like the HFO tanks who are mentioned in the explanation of the differences. For the fuel lines are single walled fuel lines used and the only parts that the system needs are fuel pumps, filters, a cooler and valves to regulate the system.
Component choice
In this chapter the possibilities will be described of all the components that are used in the system. The possibilities will be compared after the explanation of all the possibilities per component. Electrical energy in use and maintenance aspects( such as costs) will not be calculated in this chapter because there is no information for every component.
Fuel storage tanks and placing of the tanks
There are three types of tanks, tank type A, type B and type C. Type A is a membrane tank, type B is the conventional tank with some extra hull protection and C is a cylindrical tank.
The three tank types are displayed below.
Tank type A
This tank has a self-supporting construction with an inner structure, this type is without a second barrier of insulation. Membrane tanks have a maximum pressure of 0.7 bar. Safety wise, this tank will not be very safe. The tank doesn’t have a second barrier, so there will be a large gas leak when the first barrier fails.
Tank type B
Tank type B is the conventional tank. For LNG there are some extra safety layers, for example when there is a leakage, then the fluid needs to be caught before it is damaging the hull of the ship or some other parts. The maximum pressure is also 0.7 bar. There is a possibility that this tank will have small leakages at the tank structure. The next disadvantage of this tank is that the gas release is limited and it has to be handled.
Tank type C
This tank is a cylindrical tank with a minimum pressure of 2 bar and a maximum pressure of 10 bar. This tank is a leakage free tank and the only possibility for leakage is by the valves connections at the tank. Tank type c is cryogenic insulated, this means that there is a vacuum between the first and second layer, the space between the layers is also filled with perlite powder. For tank type c there are tw

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