Topic 3 Flashcards
Layers of green roof in sequence
- Roof deck, insulation, waterproofing
- Protection and storage
- Drainage and capillarity layer
- Root permeable filter layer
- Extensive growing media
- Plants, vegetation
Purpose of AC zone control
Allow user to control temp of each room individually
Features of green roof
- improves thermal insulation, reduce cooling pad
- reduce storm water runoff
- reduce heat radiating roof surfaces
Features of green wall
- better sound insulation properties
* reduced cooling load and building energy consumption
What is organic waste recycling compost?
Produced in a controlled process that involves organic material being pasteurized and microbiologically decomposed under aerobic and thermophillic conditions
Benefits of organic waste recycling compost
- lower costs
- environmentally friendly
- good social responsibility
Function of germicidal ultraviolet lamps
Penetrates cell walls of germs present in air handling unit system either by killing the cells or prevent them from reproducing.
Examples of green products
- carpet which are cradle to cradle and environmentally friendly
- green drywall partition
- green ceiling boards
Features of automatic tube cleaning system
- clean and maintain optimal efficiency
- keep tube free from scaling and fouling deposits
- no equipment downtime required
- extend life span of chillers
Features of self cleaning facade coating
- exposure with uv rays allow it to photo degrade micro organic materials
- self cleaning layer
- reduce maintenance cycle and repainting cost
Steps for performing LCC
- Determine objective
- Define and scope system
- Choose effective models
- Obtain data and make inputs
- Conduct sanity checks
- Conduct analysis and risk assessment
- Formulate results
- Document results
- Present analysis
- Update analysis
Main goal of LCC
- get Max benefit from limited resources
- accurate data
- perform trade offs
- manufacturer and user must be involved
Advantages of LCC
- reduce total cost
- comparison of cost with competing projects
- evaluation tool to select competing contractors
Disadvantages of LCC
- time consuming
- costly
- doubtful data accuracy
- difficult to obtain data for analysis
Difficulties in LCC and cba
- difficult to obtain info at start of project
- difficult to quantify and monetize impacts
- cannot decide who to carry the analysis
- personnel tasked is not trained
