Applied Component

Applied Component

Multiple Choice

Which of the following material can NOT be used as Glazing material for building a greenhouse

• Glass

• Metal

• Polythene

• Fabricated glass

Glass

Glazing material for greenhouse.

Glass has been the preferred covering material

for greenhouses worldwide because of its light

transmissivity characteristics.

Poll

Will transportation of glass panels be an disadvantage?

• Yes

• No

Polythene

It is produced

by mixing homopolymers of ethylene with or

without an ultraviolet (UV) inhibitor package,

but only a UV-stabilized polyethylene sheet is

recommended

Open Ended

What will be the disadvantage of using polythene?

FRP and polycarbonated panels

FRP- consist of fiberglass-reinforced

polyester.

SDP polycarbonate sheets are similar in

physical dimension to the SDP acrylite but are

stronger and have a lower light transmissivity

Ventilation

• •A greenhouse is ventilated for either reducing the very high greenhouse air temperatures or for replenishing carbon dioxide supply or moderating the relative humidity in the greenhouse.

• An east–west-oriented freestanding

  greenhouse maintains better winter light level as

  compared to a north–south-oriented greenhouse

Multiple Choice

When will it NOT require to bring down the greenhouse temperature

• Winter

• Spring

• Autumn

A greenhouse structure has three distinct segments

• frame - metallic greenhouse frame is designed for a service

  period of 15–25 years

• glazing material - glazing materials

  have a life span of 2–20 years.

• control/

  monitoring equipment - Control and monitoring

  equipment normally wear out in 5–10

  years.

Poll

Which of the following are greenhouse cooling systems

• Water Film

• Fan and Pad System

• Evaporation Cooling

• All of Above

Cooling Systems

• Water Film

  on the Greenhouse Cover

• Evaporative Cooling

• Fan and Pad System

• High-Pressure Mist System

Greenhouse Heating

• Design of energy-efficient greenhouse with passive solar heating components.

• Design of active heating systems based on renewable energy sources such as solar and biogas

• Design of an active heating system based on

  conventional fuels.

• While the conventional fuel-based heating systems are many and dependable, the other two categories of efforts are still evolving.

Open Ended

What are conventional fuels?

Sensor technology

• Sensors are important in monitoring, data collection, and high-speed computing systems, and based on data different control activities can be carried out.