Solutions that can improve energy efficiency: - Loft Insulation - Cavity Wall Insulation - Solid Wall Insulation - Floor Insulation - Draught Proofing - Glazing - New Construction Materials UP TO 15% LOSS

Down 1. The UK public electrical system uses 3 of these and a 4 wire system. Also the moon goes through them (Singular). Across 2. Our climate is suffering a transformation or Products used for construction purposes. PHASEPHASE C H N G E M A T R I A L S

 Be able to understand how Phase Change Materials (PCMs) improve energy efficiency in our existing buildings and future construction projects, helping to minimise global environmental issues Crossword Solution:

Phase Change Materials, commonly referred to as PCMs, are products that store, release or absorb heat (Thermal Energy) as they oscillate between solid and liquid form. Giving off heat as they change to a solid state and absorbing it as they return to a liquid state (Melting/Freezing).

Interestingly, the simplest, cheapest and most effective Phase Change Material is water/ice. Unfortunately, its freezing point of +32°F precludes it from the majority of energy storage applications.32°F

Types of

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Phase Change Materials PDMs Questionnaire Quiz

Bradford College 2009 LCB Safety Quiz Which of the following statements correctly describes the properties of a phase change material? a. A substance that requires a relatively small amount of heat to change from solid to a liquid. b. A substance that requires a relatively large amount of heat to change from solid to a liquid. c. A substance that does not change state, even at very high temperatures d. A substance that absorbs large amount of humidity from the air. 1 PCMs questionnaire Question 1

Bradford College 2009 LCB Safety Quiz Which of the following is an example of latent heat transfer? a. Heat is applied to water at 75°C, which gets hotter until it reaches its boiling point of 100°C. b. Heat is applied to water at 50°C, which gets hotter until it reaches its boiling point of 100°C. c. Heat is applied to water at 100°C, which remains the same temperature until all the water is evaporated. d. The heat source is removed, and the temperature of the water falls until it reaches room temperature or its freezing point of 0°C. 1 PCMs questionnaire Question 2

Bradford College 2009 LCB Safety Quiz What temperature should phase change materials used in mechanically ventilated spaces change from a solid to a liquid? a. 20°C. b. 23°C. c. 26°C. d. 30°C. 1 PCMs questionnaire Question 3

Bradford College 2009 LCB Safety Quiz Which of the following is an appropriate use of phase change materials? a. To maximise the efficiency of HVAC systems. b. As a replacement for insulation. c. Applied to exterior walls. d. To manage internal humidity. 1 PCMs questionnaire Question 4

Bradford College 2009 LCB Safety Quiz Which of the following is NOT a required property of a phase change material? a. High thermal conductivity. b. Congruent melting. c. A completely reversible freezing/melting cycle. d. A large difference in volume when changing from solid to liquid. 1 PCMs questionnaire Question 5

Bradford College 2009 LCB Safety Quiz Which of the following statements correctly describes the properties of a phase change material? a. A substance that requires a relatively small amount of heat to change from solid to a liquid. b. A substance that requires a relatively large amount of heat to change from solid to a liquid. c. A substance that does not change state, even at very high temperatures d. A substance that absorbs large amount of humidity from the air. 1 PCMs questionnaire Question 1

Bradford College 2009 LCB Safety Quiz Which of the following is an example of latent heat transfer? a. Heat is applied to water at 75°C, which gets hotter until it reaches its boiling point of 100°C. b. Heat is applied to water at 50°C, which gets hotter until it reaches its boiling point of 100°C. c. Heat is applied to water at 100°C, which remains the same temperature until all the water is evaporated. d. The heat source is removed, and the temperature of the water falls until it reaches room temperature or its freezing point of 0°C. 1 PCMs questionnaire Question 2

Bradford College 2009 LCB Safety Quiz What temperature should phase change materials used in mechanically ventilated spaces change from a solid to a liquid? a. 20°C. b. 23°C. c. 26°C. d. 30°C. 1 PCMs questionnaire Question 3

Bradford College 2009 LCB Safety Quiz Which of the following is an appropriate use of phase change materials? a. To maximise the efficiency of HVAC systems. b. As a replacement for insulation. c. Applied to exterior walls. d. To manage internal humidity. 1 PCMs questionnaire Question 4

Bradford College 2009 LCB Safety Quiz Which of the following is NOT a required property of a phase change material? a. High thermal conductivity. b. Congruent melting. c. A completely reversible freezing/melting cycle. d. A large difference in volume when changing from solid to liquid. 1 PCMs questionnaire Question 5

 Be able to discover how Phase Change Materials (PCMs) improve energy efficiency in our existing buildings and future construction projects, helping to minimise global environmental issues. Crossword Solution:

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