Recent changes to Home

Home modified by Thomas Hood

Thomas Hood — Tue, 16 Jun 2015 08:29:53 -0000

--- v56
+++ v57
@@ -68,10 +68,10 @@
 ## Links ##

 OpenTRV project website (external):
-    * [Home page][1]
+    * OpenTRV [Home page][1]
     * [Initial and proposed timetables][2]
     * [Initial minimum spec][3]
-[DHD's ToDo](wiki:DHD-ToDo)
+    * [DHD's ToDo](wiki:DHD-ToDo)

 [1]: http://www.earth.org.uk/open-source-programmable-thermostatic-radiator-valve.html
 [2]: http://www.earth.org.uk/open-source-programmable-thermostatic-radiator-valve.html#inittimeline

Home modified by Thomas Hood

Thomas Hood — Mon, 10 Feb 2014 11:12:22 -0000

--- v55
+++ v56
@@ -10,7 +10,7 @@

 One would like to achieve optimal energy savings without replumbing the whole house. What if we were to fit the radiators with *active* valves and install a system that controls the active valves and boiler according to room occupancy?

-An active valve must have some sort of microcontroller on board that will change the valve's temperature set point. A first step is to program into this microcontroller a temperature schedule corresponding to the expected occupancy schedule of the room. Many such "eTRVs" are already [on the market](wiki:TRV). The next step is to connect the eTRV with an occupancy sensor so that it can reduce the temperature when there's no one around, making in an intelligent TRV (iTRV). A third step is to connect the iTRVs to the boiler controller so that they can tell the latter to supply heat when they need it.
+An active valve must have some sort of microcontroller on board that will change the valve's temperature set point. A first step is to program into this microcontroller a temperature schedule corresponding to the expected occupancy schedule of the room. Many such ["eTRVs"](wiki:Glossary) are already [on the market](wiki:TRV). The next step is to connect the eTRV with an occupancy sensor so that it can reduce the temperature when there's no one around, making in an intelligent TRV (iTRV). A third step is to connect the iTRVs to the boiler controller so that they can tell the latter to supply heat when they need it.

 One would like to achieve optimal energy savings without rewiring the whole house, so these connections will have to be wireless.

Home modified by Damon Hart-Davis

Damon Hart-Davis — Sun, 14 Apr 2013 10:33:40 -0000

--- v54
+++ v55
@@ -29,6 +29,8 @@
 See the [Glossary](wiki:Glossary) for some terminology.

 ## News ##
+
+DHD20130414: V0.1 tag, code commissioned on V0.09 PCB for my study/desk: https://sourceforge.net/p/opentrv/code-0/HEAD/tree/trunk/PICAXE/DHD201302L0/snapshots/20130414-r1027-V1p0/

 DHD20130404: Mike populated (and tested) the first V0.09 board!  https://twitter.com/mikestir_uk/status/319917642435665921/photo/1

Home modified by Thomas Hood

Thomas Hood — Tue, 09 Apr 2013 09:34:29 -0000

--- v53
+++ v54
@@ -26,7 +26,7 @@
 Want to learn more about the project? See [the project home page](http://www.earth.org.uk/open-source-programmable-thermostatic-radiator-valve.html), then come back here and 
 click on Browse Pages to browse the wiki.

-See the [Glossary] for some terminology.
+See the [Glossary](wiki:Glossary) for some terminology.

 ## News ##

Home modified by Thomas Hood

Thomas Hood — Fri, 05 Apr 2013 12:01:34 -0000

--- v52
+++ v53
@@ -4,15 +4,19 @@

 This is the OpenTRV Wiki: Hello!

-Most dwellings that are heated with radiators could use less energy if the radiators and boiler were intelligently controlled so as to deliver heat only when it is needed — that is, only when a particular room is occupied. 
+Most dwellings that are heated with radiators would use less energy if the radiators and boiler(s) were intelligently controlled so as to deliver heat only when it is needed — that is, only when the rooms in question are occupied. 

-Current central heating systems regulate the temperature of the whole house according to the temperature in one location — say, the living room. Sometimes they limit the temperature in other rooms by means of passive thermostatic radiator valves (TRVs). But this is not yet optimal, because (1) rooms may be heated when they are not occupied; and (2) occupied rooms may go *unheated* if the temperature in the living room has reached the target temperature.
+Current central heating systems regulate the temperature of the whole house according to the temperature in one location — say, the living room. Sometimes the system limits the temperature in other rooms by means of (passive) thermostatic radiator valves (TRVs). But this is not yet optimal, because (1) rooms may be heated when they are not occupied; and (2) occupied rooms may go *unheated* if the temperature in the living room has reached the target temperature.

-One would like to achieve optimal energy savings without replumbing the whole house. What if we were to fit the radiators with dynamic valves and install a system that controls the boiler and the dynamic valves according to current temperature, occupancy and desired temperature of each room?
+One would like to achieve optimal energy savings without replumbing the whole house. What if we were to fit the radiators with *active* valves and install a system that controls the active valves and boiler according to room occupancy?

-Damon Hart-Davis launched the OpenTRV project with the goal of making hardware and software available that implements such a system, the ultimate aim being to facilitate optimal energy savings and comfort.
+An active valve must have some sort of microcontroller on board that will change the valve's temperature set point. A first step is to program into this microcontroller a temperature schedule corresponding to the expected occupancy schedule of the room. Many such "eTRVs" are already [on the market](wiki:TRV). The next step is to connect the eTRV with an occupancy sensor so that it can reduce the temperature when there's no one around, making in an intelligent TRV (iTRV). A third step is to connect the iTRVs to the boiler controller so that they can tell the latter to supply heat when they need it.

-Whereas [commercial systems do exist](wiki:TRV) which can control radiators dynamically, none of the existing systems offers all the features needed for optimal energy savings, comfort and convenience, and none of the commercial systems is really *open*. Only an *open* system can be extended, integrated and continually improved by all parties, without restrictions.
+One would like to achieve optimal energy savings without rewiring the whole house, so these connections will have to be wireless.
+
+Damon Hart-Davis launched the OpenTRV project with the goal of making hardware and software available that implements such a system — wireless occupancy-dependent iTRVs with boiler control — the ultimate aim being to facilitate optimal energy savings and comfort.
+
+No existing system offers all the features needed for optimal energy savings, comfort and convenience, and none of the commercial systems is really *open*. Only an *open* system can be extended, integrated and continually improved by all parties, without restrictions.

 The short term goal is to realize a functional reference system making use of existing off-the-shelf hardware. See [the roadmap on the project website](http://www.earth.org.uk/open-source-programmable-thermostatic-radiator-valve.html#timelineTo201310).

Home modified by Damon Hart-Davis

Damon Hart-Davis — Fri, 05 Apr 2013 10:31:05 -0000

--- v51
+++ v52
@@ -21,6 +21,8 @@

 Want to learn more about the project? See [the project home page](http://www.earth.org.uk/open-source-programmable-thermostatic-radiator-valve.html), then come back here and 
 click on Browse Pages to browse the wiki.
+
+See the [Glossary] for some terminology.

 ## News ##

Home modified by Damon Hart-Davis

Damon Hart-Davis — Thu, 04 Apr 2013 21:57:14 -0000

--- v50
+++ v51
@@ -23,6 +23,8 @@
 click on Browse Pages to browse the wiki.

 ## News ##
+
+DHD20130404: Mike populated (and tested) the first V0.09 board!  https://twitter.com/mikestir_uk/status/319917642435665921/photo/1

 DHD20130321: Automated Home write-up: http://www.automatedhome.co.uk/carbon-footprint/opentrv-better-heating-and-saving-the-planet.html

Home modified by Thomas Hood

Thomas Hood — Thu, 04 Apr 2013 09:14:48 -0000

--- v49
+++ v50
@@ -4,11 +4,15 @@

 This is the OpenTRV Wiki: Hello!

-Most dwellings that are heated with radiators could use less energy if the radiators and boiler were intelligently controlled so as to deliver heat only when it is needed — that is, only when a particular room is occupied.
+Most dwellings that are heated with radiators could use less energy if the radiators and boiler were intelligently controlled so as to deliver heat only when it is needed — that is, only when a particular room is occupied. 

-Damon Hart-Davis launched the OpenTRV project with the goal of making hardware and software available for intelligent control of radiators, the ultimate aim being to facilitate such  energy savings.
+Current central heating systems regulate the temperature of the whole house according to the temperature in one location — say, the living room. Sometimes they limit the temperature in other rooms by means of passive thermostatic radiator valves (TRVs). But this is not yet optimal, because (1) rooms may be heated when they are not occupied; and (2) occupied rooms may go *unheated* if the temperature in the living room has reached the target temperature.

-Whereas [commercial systems do exist](wiki:TRV) which can control radiators dynamically, none of the existing systems offers all the features needed for optimal energy savings and convenience, and none of the commercial systems is really *open*. Only an *open* system can be extended, integrated and continually improved by all parties, without restrictions.
+One would like to achieve optimal energy savings without replumbing the whole house. What if we were to fit the radiators with dynamic valves and install a system that controls the boiler and the dynamic valves according to current temperature, occupancy and desired temperature of each room?
+
+Damon Hart-Davis launched the OpenTRV project with the goal of making hardware and software available that implements such a system, the ultimate aim being to facilitate optimal energy savings and comfort.
+
+Whereas [commercial systems do exist](wiki:TRV) which can control radiators dynamically, none of the existing systems offers all the features needed for optimal energy savings, comfort and convenience, and none of the commercial systems is really *open*. Only an *open* system can be extended, integrated and continually improved by all parties, without restrictions.

 The short term goal is to realize a functional reference system making use of existing off-the-shelf hardware. See [the roadmap on the project website](http://www.earth.org.uk/open-source-programmable-thermostatic-radiator-valve.html#timelineTo201310).

Home modified by Thomas Hood

Thomas Hood — Thu, 04 Apr 2013 09:02:07 -0000

--- v48
+++ v49
@@ -4,7 +4,7 @@

 This is the OpenTRV Wiki: Hello!

-Most dwellings that are heated with radiators could use less energy if the radiators, and not just the boiler, were intelligently controlled so as to deliver heat only when it is needed — that is, only when the room is actually occupied or likely to be occupied.
+Most dwellings that are heated with radiators could use less energy if the radiators and boiler were intelligently controlled so as to deliver heat only when it is needed — that is, only when a particular room is occupied.

 Damon Hart-Davis launched the OpenTRV project with the goal of making hardware and software available for intelligent control of radiators, the ultimate aim being to facilitate such  energy savings.

Home modified by Thomas Hood

Thomas Hood — Thu, 04 Apr 2013 08:02:55 -0000

--- v47
+++ v48
@@ -54,17 +54,16 @@
 ## Links ##

 OpenTRV project website (external):
-  [Home page][1]
-  [Initial and proposed timetables][2]
-  [Initial minimum spec][3]
+    * [Home page][1]
+    * [Initial and proposed timetables][2]
+    * [Initial minimum spec][3]
+[DHD's ToDo](wiki:DHD-ToDo)

 [1]: http://www.earth.org.uk/open-source-programmable-thermostatic-radiator-valve.html
 [2]: http://www.earth.org.uk/open-source-programmable-thermostatic-radiator-valve.html#inittimeline
 [3]: http://www.earth.org.uk/open-source-programmable-thermostatic-radiator-valve.html#initspec
 [4]: https://sourceforge.net/p/opentrv/code-0/618/tree/trunk/PICAXE/DHD201302L0/snapshots/20130228-r615/DHD201302L0.out.bas

-[DHD-ToDo]
-
 ## Project admins ##

 [[project_admins]]