Green Collar Job Training - Free

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Course Title
100 Home
101 Introduction
102 FAQ Page
103 Course Catalog
104 Green World
105 Demand & Supply
106 Conservation Careers
107 Solar Careers
108 Wind Turbine Careers
109 Entrepreneurs
110 Employee or Employer?
200 Demand Management
201 Summary
202 Residential Energy Profile
203 Ten Conservation Rules
204 HVAC System
205 Kitchen Appliances
206 Water Heater
207 Lighting
208 Laundry Appliances
209 Calculating Savings
300 Renewable Technology
301 Solar Energy
302 Solar Collectors
303 Solar Water Heating
304 Stirling Engines
305 Basic AC-DC Electronics
306 Silicon Solar Panels
307 Thin Film Solar Panels
308 Wind Turbines
309 Inverters
310 Grid Tied and Off Grid
311 Solar Site Survey
312 Solar Site Diagram
313 Sun Path Chart
314 Site Survey Worksheet
315 Wind Turbine Site Survey
316 Wind Turbine Worksheet
400 Solar Thermal Design
401 Solar Heat Overview
402 System Configuration
403 Site Survey
404 SRCC Compliance
405 System Specification
406 Bill of Materials
407 System Installation
408 Solar Heat Incentives
409 Document Package
410 Future Products
500 Solar PV Design
501 Solar PV Overview
502 System Configuration
503 Site Survey
504 Grid Tied & Off Grid
505 System Specification
506 Bill of Materials
507 System Installation
508 Solar PV Incentives
509 Document Package
510 Future Products
600 Wind Turbine Design
601 Wind Turbine Overview
602 System Configuration
603 Site Survey
604 Grid Tied and Off Grid
605 System Specification
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Green Collar Careers - System Configuration

Through Section 401 you were introduced to the primary components of a solar water heating system, now we'll put them together on a system diagram.

Click on the image at the right to open the system diagram to see the recommended system configuration.  This configuration has been in use for many years and has proven the most cost effective way to construct a cost effective durable solar hot water heating system.

This system diagram uses a dual purpose storage tank. 

Closed Loop systems require an Air Vent to bleed out air from the highest point in the antifreeze circuit. 

The circuit is equipped with its own Pressure Relief Valve and should be located outside near the solar collectors.

The Floating Ball Check Valve prevents flow of water when the pump is shut off to avoid cooling the storage tank from convective flow of water.

Antifreeze flows through the heat exchanger that is wrapped around the storage tank.  Antifreeze exiting the heat exchanger is the "cold" side which is usually about 10 warmer then the storage tank.  Both hot and cold sides of the Closed Loop plumbing need to be insulated.

There are service ports on the cold side, one to drain the antifreeze, one to fill it.  Valve V1 is used to fill the system, Valve V2 is used to drain the system, and Valve V3 shuts off the path between V1 and V2 to force the filling fluid through the entire system rather then straight back out between V1 and V2.

There are two Temperature Gauges (optional) one on the cold side, one on the hot side which are recommended to give a visual observation and back up to the thermocouples.  Should there be a failure these gauges are handy to use for diagnosis.

Also on the cold side is an Expansion Tank with an optional Pressure Gauge on top.  The gauge will measure low pressures and is handy for diagnostics such as pump failure.

Finally the Pump is shown with a Polar PV panel to provide power.  What is not shown is the controller and thermocouples.