air conditioning (ch5)

8/8/2019 air conditioning (ch5)

1/4

114

C hapter F ive

C onclusion &

Recommendation


2/4

115

This research study aimed at creating a data base that will assist in the effective rational

use of energy and high-quality base in this kind of buildings (hospitals). This study focused on

the new methods and improvements that will ensure our consumption of energy, thus reducingthe economic cost.

The following table and figures summarizes the effect of each improvement on thermal

load if it has been added separately to the building.

Table (5-1):- effect of total improvements on thermal loads.

ImprovementHeating load saving

(kW)

Cooling load

saving(kW)U 33 22

SC 0 17.4

Lights 0 28.6

Total 33 68

Figure (5-1):- percentage of saving in heating load .

saving10%

Total heatingload

90%

Percentage saving in heating load


3/4

116

Figure (5-2):- Percentage saves in cooling load from different improvement s .

Adding to these improvements the use of solar system to produce the domestic hot water

and incineration of solid waste by which we are getting rid of the steam boiler and so removing

these wastes from the environment.

If all improvements has been added for the base case, fixed cost of the improved case was

higher than the base case, on the other hand the total annual operating cost was lower for the

improved case and the pay back period for the improved case was about 5 years and 7 months

which is logical since the life of this project is assumed to be 20 years.

Also it has been detailed the energy saving and money saving by adding each

improvement alone and the pay back period for each. All these improvement have a pay back

period less than 1 year

From previous chapters we can notice that there was big chance to improve health carebuilding has a introduced different types of improvements that are recommended to be added to

our base case with cost analysis for each .In this section we will discuss the case in which we

have added total improvements with detailed economical analysis.

U7% Sc

6%

Lights10%

Total heatingload77%

Percentage saving in cooling load


4/4

117

In winter (heating mode) as shown in the previous table that load saving in heating load

is equal to 33 kW . Total heating load with domestic hot water has been reduced from 283 kW to

250 kW

In summer (cooling Mode) as shown in the previous table that load saving in cooling

load is equal to 68 kW . Total cooling load has been changed from 293.4kW to 225.4kW.

Finally, we recommend those who are planning for new projects for applying some or all

our improvements that has been done on this building which we consider as energy efficient

building. And for those who are interested in our project subject to test more improvements to bedone on this type of buildings; such as system used for heating and cooling and searching for the

most economical system between chiller and air handling units or VRV system or absorption

etc. In the field of medical waste incineration it is highly recommended to make more specified

studies on the exhaust gases that produced from incinerating and it effect on environments and

do all possible ways to reduce its hazardous effects.

air conditioning (ch5)

Documents