greenleaf A L T E R N A T I V E S O L U T I O N S PRODUCT - PowerPoint PPT Presentation

greenleaf A L T E R N A T I V E S O L U T I O N S PRODUCT PRESENTATION www.greenleafas.co.za | info@greenleafas.co.za | Cell: 0824642531 | Office: 0117052427 Showroom & Offices: 36 Karee Lane, Kyalami AH, 1684

Product Portfolio Photo Voltaic Systems(Solar Electricity) Solar Geysers and Heat Pumps Solar Pumps Energy Audits Silent Generators Rain Water Harvesting Water Based Under Floor Heating Grey Water Recycling Atmospheric Water Generation Energy Efficient Lighting and Home Automation Septic Tanks and Black Water Recycling Efficient Pool Pumps

PV (Photo Voltaic) Systems A PV System is an arrangement of components designed to supply usable electric power for a any purpose, using the Sun as the energy source. Any size system is possible depending on requirements PV systems are modular and can be expanded over time Many types of configuration are possible for e.g. Grid-Tied(Works in conjunction with main supply) or Off-Grid(Uses batteries a storage mechanism that would be charged during the day and discharged or used during the evenings) or a combination of both. ADVANTAGES: Environmentally friendly method of electricity production, zero pollution. Silent Maintenance free Long term electricity generation, minimum 25 years Abundant and free energy source(The Sun) Ideal for remote locations where there is no Grid Ease of installation

DC, CURRENT PV System - How It Works DC, NO CURRENT AC, CURRENT AC, NO CURRENT Morning Afternoon Evening Night @ @ @ @ Energy produced by the PV system When the batteries are fully charged Once the sun has set, the system If the battery capacity is insufficient and the system is already meeting self- automatically switches to energy to meet own consumption requirements, is used to optimize self-consumption. consumption requirements, excess from the batteries. electricity is then obtained from the The excess energy is used to energy is fed into the power grid. public network. recharge the batteries.

Solar Pumping Systems Solar pumping systems are self contained pumping systems that can be installed in any location that does not require a convention electrical energy source such as the Grid or a generator. The are many types and sizes of Solar pump each with its own application. Total Dynamic Head from 10m-350m and flow rates up to 70m3 depending on pump type e.g. Helical = Large Head/Low Flow Rate and Centrifugal = High Flow Rate/Smaller Heads Solar pumping systems include all the required equipment including PV panel array, Control and Protection, mount- ing systems(roof/ground) and cabling to complete the full installation ADVANTAGES: Environmentally friendly method of pumping, zero pollution. Silent Almost maintenance free Long term electricity generation, minimum 25 years Abundant and free energy source (the sun) Ideal for remote locations where there is no Grid Ease of installation

Solar Pumping - Concept Solar Panel DC Power Cable Electronic Solar irradiation provides energy at the PV array Pump Enhancer Water Tank DC electricity is generated from the PV array Float Switch (optional) 1/2” Pump enhancer or MPPT tracker gives maximum power to the pump Outlet Bore Pipe Cap Pump is powered and pumps water from borehole to storage tank Stainless Steel Support Wire Float switch will switch pump off when tank is full Bore Pump 3” Pole (not supplied) Bore

Under Floor Heating Packaged radiant floor heating system whereby warm water is pumped through Polyethylene tubes (manufactured to ISO 1234 standards, with SABS approval) arranged in such a manner as to distribute heat quickly and evenly through a building. Tubes are spaced between 150 and 200 mm to enable lowered input requirements. We install 33 to 50% more tube than traditional/ competitive systems. The heated water is transported through the tubes which conduct heat into the floor slab / screed. The resulting warm floor then radiates heat into the room, heating all solid objects such as walls, ceilings, furnishings and people in the same natural manner that the sun heats the planet. The tubes are connected by flow and return lines to a distribution (manifold) panel which usually contains the system's heat source and circulating pump. The simplicity of the system is such that it can be easily controlled both as to temperature and time, resulting in optimum energy efficiency and low running costs. Heating zones can be controlled manually. Individual room thermostats provide greater control flexibility and can be added on request.

UFH - Tube Installation INSTALLATION ON TOP OF THE CONCRETE SLAB The tubing can be installed on top of the concrete slab and just be covered with screed before the final finish is installed. The screed thickness should be no less than 35mm to cover the tubing sufficiently for tiled floors and 40mm for carpeted and laminated wood floors. It is advisable to install insulation below the concrete slab to limit heat loss The insulation would be placed on top of the DPC plastic sheeting with the concrete cast directly onto the insulation material. INSTALLATION WITH INSULATION ON TOP OF THE CONCRETE SLAB This installation method is the most efficient way of heating as the heat losses are optimally minimized. The slab however needs to be cast 90-100mm lower than the finished floor level (one standard brick height lower than normal). The insulation is installed on top of the concrete slab and a foam insulation strip of 100mm high is nailed to the walls, whereby the insulation on the floor will limit heat loss into the concrete slab. A steel-reinforcing mat is laid onto the insulation and the heat tubing is fixed to this steel mesh. A screed of approximately 60mm is cast containing the tubing and reinforcing mesh The heating system will have a faster reaction time using this method of installation, as no heat is lost into the concrete slab.

UFH - Thermostats DIGITAL PROGRAMMABLE THERMOSTATS These thermostats give you the option of dividing your days into segments and allowing you to set the ideal temperature for that particular time of day. As an example you can program the thermostats to reduce the desired temperature from 22°c down to 17°c during the day when no one is at home. This amounts to significant reduction in energy costs. STANDARD ANALOGUE THERMOSTAT Here normally through a small dial, you set the thermostat to your specific required temperature. This desired temperature is then static and will remain at that chosen level as long as the system is turned on or until a different temperature is chosen. UFH - Heat Sources HEAT PUMP Heat pumps are often used as the primary heat source due to their low energy (electricity) usage. A heat pump extracts energy from the surrounding free air and transfers the energy to the water that is pumped through the floor tubing. The heat pump saves up to 70% of the operat- ing cost when compared to electric elements.

Solar Geysers and Heat Pumps Evacuated Tube Heat Pipe solar collector technology is one of the cutting edge technologies when it comes to solar water heating panels. Combining the incredible insulating properties of a vacuum with the latest technology in selec- tive absorptive coatings this product offers the highest thermal output even under the worst of weather condition. The round absorber area provides for passive solar tracking ensuring a very optimal and even thermal output from sunrise to sundown. Uses the latest compressor technology with the industries first heat pump specific compressor. Produces 85°C water where other heat pumps produce 65°C water at the same gas pressure. Engineered for comfort and class leading efficiency that will save you thousands each year. Maximum hot water delivery via the ITS patented integration technique. Environmentally friendly R134a gas. Unequalled life expectancy. Quiet and unobtrusive.

Solar Geysers Operation Solar collector A small pump is used to transfer the water through out the system. The solar collector gathers energy from the sun (Thermal and infrared). The heat pipe transfers the heat to the manifold by a very simple method. The copper heat pipe is hollow and contains a small amount of fluid. The hollow centre of the heat pipe is a vacuum, so that even at tempera - tures of around 30C the fluid will vaporize (boil). The vapour rises to the To taps tip (condenser) of the heat pipe where the heat is transferred to the water Controller Tank flowing through the manifold. This heat transfer causes the vapour to condense and flow back down the heat pipe where the process is once again repeated. Boiler The heated water is then exchanged in the storage tank and the process is repeated until the water is at the desired temperature. Cold The Controller will control and monitor the process as well as us a back Pump water feed up element when needed.

Heat Pumps Operation Sensor A heat pump extracts heat from the ambient air Cold Air surrounding it enabling it to heat the refrigerant Outlet which is then compressed causing it to get even hotter. Fan Hot Water This is then run through a heat exchanger where Outlet this thermal energy is drawn off to heat the water and then the refrigerant is allowed to expand Evaporator again, thus cooling it down and enabling it again Compressor to absorb heat from the surrounding air. Cold So electricity is only used to run a fan and Water compressor and the heat Inlet Expansion Water Heat Valve Exchanger Energy is provided indirectly by the sun.