I have also realised that my intentions for night air charging are possible, but unnecessary. When heating is going on (late March/early April) the boxes worked at night because air temp was better than glycol temp - that was helpful. Now that it is summer (we hope it stays that way) I have noticed three things: Morning Startup: The sunboxes don`t
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start up by themselves on cloudy days, until the heat-pump lowers the glycol sufficiently : good! this is saving pump power and the heat we would get down would not be worth the pump power. On cool days, the boxes come on when GSHP demands, support the GSHP in Realtime while it does a water heating cycle, then they turn off shortly after the GSHP goes back to sleep. This is good! On sunny mornings, the cold sensor is at Room temperature, say 22 C, so they will start up by themselves if the Sunbox temp rises to 27 C. (Startup is dependent on the temperature difference - I am finding that 5 degrees C is pretty well perfect balanced - ensures that pump is not on for excessive hours, but when it is, the heat being claimed is worth getting. ). Day gains-Night gains: The amount of power we get on sunny days is sooooo much that it`s not necessary to chase after small gains based on night time air temperatures (but I am willing to change my mind later in summer, depending on the datalogger finding. ) Night time action only occurs if the GSHP demands realtime heat. There`s no point in interseasonal night charging. Temperature reversal : The earth below the house is getting 8-16 kWhr per day. This disperses well, so there is no danger of chilling. At the end of a day, the temperature below is quite acceptable, sometimes higher than the morning temp. e. g. before we did this, the evening temperature might be 5. 8 but in the morning it...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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