Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


Filter this topic showing only the reply marked as answer View this topic in a long page with up to 500 replies per page Create new topic
1 | 2 
571 posts

Ultimate Geek
+1 received by user: 195


  # 2240588 18-May-2019 16:33
One person supports this post
Send private message quote this post

Why does he turn the cylinder off?

 

We are on a day/night plan with Genesis. They turn the cylinder on for several hours, sometime between 9pm and 7am. We don't have to do anything.

 

We also run the dishwasher after 9pm to get the cheaper power rate.

 

 

 

 


555 posts

Ultimate Geek
+1 received by user: 83

Trusted
Lifetime subscriber

  # 2240626 18-May-2019 18:34
Send private message quote this post

k1w1k1d:

Why does he turn the cylinder off?


We are on a day/night plan with Genesis. They turn the cylinder on for several hours, sometime between 9pm and 7am. We don't have to do anything.


We also run the dishwasher after 9pm to get the cheaper power rate.


 


 



We also run the washing machine when we go to bed and it's ready to hangout before work in the morning

 
 
 
 


571 posts

Ultimate Geek
+1 received by user: 195


  # 2240676 18-May-2019 22:49
Send private message quote this post

I turn the washing machine on when I get up at 6am, so it has finished before the day rate starts at 7am.


14884 posts

Uber Geek
+1 received by user: 2019


  # 2240682 18-May-2019 22:56
Send private message quote this post

What do people think of these Smart cylinders , which apparently can save up to 10% off heating bill?.  https://rinnai.co.nz/Product/121/257/water-heating-hot-water-cylinders-rinnai-smart-cylinder-the-rinnai-smart-cylinder


12875 posts

Uber Geek
+1 received by user: 4308

Trusted
Lifetime subscriber

  # 2240694 19-May-2019 02:32
Send private message quote this post

Is it possible to fit an insulation jacket to the outside? That would reduce loss further and save money. In the UK, they habitually insulate exposed hot water pipes too. Do they do that here?





352 posts

Ultimate Geek
+1 received by user: 146


  # 2240708 19-May-2019 09:47
Send private message quote this post

Geektastic: Is it possible to fit an insulation jacket to the outside? That would reduce loss further and save money. In the UK, they habitually insulate exposed hot water pipes too. Do they do that here?

 

 

 

Yes they do. Surprising they dont have one, yet go to extremes in managing the electricity it uses.


9 posts

Wannabe Geek
+1 received by user: 3


  # 2242837 22-May-2019 04:54
Send private message quote this post

From Vector's hot water load management FAQ’s:

 

Does it cost more to heat a hot water cylinder if it has been switched off by a load management system?

 

No. In fact, there may be marginally less electricity used overall if reheating a cold cylinder than keeping a cylinder at the temperature set point with uninterrupted electricity supply.


 
 
 
 


14792 posts

Uber Geek
+1 received by user: 2753

Trusted
Subscriber

  # 2242888 22-May-2019 07:27
One person supports this post
Send private message quote this post

The hotter the water is the high the heat losses, so by switching it off there is less overall heat loss. Given power is cheaper at night I think turning it off at night is sensible. I doubt he'll save all that much, but a little.

 

He could have a timer installed, but that cost me $250 and was only worthwhile for the Electric Kiwi free hour of power. Even then the break even time is a year or more.


3856 posts

Uber Geek
+1 received by user: 1184


  # 2242914 22-May-2019 09:33
One person supports this post
Send private message quote this post

mattwnz:

 

What do people think of these Smart cylinders , which apparently can save up to 10% off heating bill?.  https://rinnai.co.nz/Product/121/257/water-heating-hot-water-cylinders-rinnai-smart-cylinder-the-rinnai-smart-cylinder

 

 

Wow, there is so much spin on that page my head is still turning,

 

"In vacation mode the Rinnai Smart Cylinder will keep the water at a minimum temperature (6°C) to save power. This will also prevent the water from freezing in colder areas."

 

Maybe at Scot base this is a problem,

 

but I've looked after ski lodges on  Mt Ruapehu, And I have never seen a regular hot water cylinder freeze (even in the depths of winter with a building being un heated and un attended for weeks....

 

+keeping you cylinder warm is fine, but what about the rest of your plumbing, which will freeze up long before the cylinder solidifies...

 

 

 

 

 

 

 

 


389 posts

Ultimate Geek
+1 received by user: 90

Subscriber

  # 2242941 22-May-2019 09:54
Send private message quote this post

timmmay:  The hotter the water is the high the heat losses, so by switching it off there is less overall heat loss. Given power is cheaper at night I think turning it off at night is sensible. I doubt he'll save all that much, but a little.

 

He could have a timer installed, but that cost me $250 and was only worthwhile for the Electric Kiwi free hour of power. Even then the break even time is a year or more.

 

Exactly right.  There will be less standing loss if the heater is off during the day, but the saving will be small.  The only thing I would add is that if you use the HWC cupboard as an airing cupboard then it's the standing losses that provide the heat, so turning it off in the day reduces that. Noticeable but not by much.





McLean


3348 posts

Uber Geek
+1 received by user: 714

Trusted

  # 2245535 25-May-2019 21:12
Send private message quote this post

k1w1k1d:

 

Why does he turn the cylinder off?

 

We are on a day/night plan with Genesis. They turn the cylinder on for several hours, sometime between 9pm and 7am. We don't have to do anything.

 

We also run the dishwasher after 9pm to get the cheaper power rate.

 

 

 

 

 

 

If its just a controlled plan, it will probably be ripple controlled by your local lines company and not Genesis. The lines company is supposed to provide a minimum of ~18 hours heating time per day (depends upon local lines company) and so there is a high chance they will switch it on during the day, with your thermostat kicking it in if you had used the hot water in the morning. 

 

The controlled/ripple control function is a result of your local lines company desire to shed load and move it to offpeak times. 

 

The on/offpeak pricing is more a market feature / pricing game that the electricity companies play, which can often be based on the load shedding desires of your local lines company but they dont always match up. 





Ray Taylor
Taylor Broadband (rural hawkes bay)
www.ruralkiwi.com

There is no place like localhost
For my general guide to extending your wireless network Click Here




3348 posts

Uber Geek
+1 received by user: 714

Trusted

  # 2245536 25-May-2019 21:13
Send private message quote this post

Geektastic: Is it possible to fit an insulation jacket to the outside? That would reduce loss further and save money. In the UK, they habitually insulate exposed hot water pipes too. Do they do that here?

 

 

 

The typical ones you buy from M10 / Bunnings / Warehouse are not very effective. 

 

https://www.youtube.com/watch?v=HJYrMdSiaQU 

 

This is a typical canadian one showing similar results. 





Ray Taylor
Taylor Broadband (rural hawkes bay)
www.ruralkiwi.com

There is no place like localhost
For my general guide to extending your wireless network Click Here




773 posts

Ultimate Geek
+1 received by user: 100

Lifetime subscriber

  # 2245585 25-May-2019 21:46
Send private message quote this post

I have my hot water heating on a controlled plan that has a cheaper rate.

 

I have a Smart Meter with Pulse Energy.

 

Does the Smart Meter give the power company the option to switch the water heating to full rate metering during the day?

 

 





Gordy


2219 posts

Uber Geek
+1 received by user: 435

Trusted

  # 2245751 26-May-2019 06:01
Send private message quote this post

Gordy7:

 

I have my hot water heating on a controlled plan that has a cheaper rate.

 

I have a Smart Meter with Pulse Energy.

 

Does the Smart Meter give the power company the option to switch the water heating to full rate metering during the day?

 

 

 

 

Short answer, no.

 

Assuming your power bill details your hot water usage separately, then it will be metered separately, and count all hot water/controlled usage equally regardless of what time it is on. The cheaper rate is more a reflection of their right to interrupt your hot water/controlled supply, rather than a specific time


972 posts

Ultimate Geek
+1 received by user: 45


  # 2252762 6-Jun-2019 09:16
Send private message quote this post

Bluntj:

Geektastic: Is it possible to fit an insulation jacket to the outside? That would reduce loss further and save money. In the UK, they habitually insulate exposed hot water pipes too. Do they do that here?

 

 

 

Yes they do. Surprising they dont have one, yet go to extremes in managing the electricity it uses.

 

 

$55 to buy a Greenstuf polyester cylinder insulation cover.

 

 

Copper pipe insulation is cheap. The copper pipes adjacent to the cylinder are radiators if left uncovered.

1 | 2 
Filter this topic showing only the reply marked as answer View this topic in a long page with up to 500 replies per page Create new topic



Twitter and LinkedIn »



Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Xero announces new smarter tools, push into the North American market
Posted 19-Jun-2019 17:20


New report by Unisys shows New Zealanders want action by social platform companies and police to monitor social media sites
Posted 19-Jun-2019 17:09


ASB adds Google Pay option to contactless payments
Posted 19-Jun-2019 17:05


New Zealand PC Market declines on the back of high channel inventory, IDC reports
Posted 18-Jun-2019 17:35


Air New Zealand uses drones to inspect aircraft
Posted 17-Jun-2019 15:39


TCL Electronics launches its first-ever 8K TV
Posted 17-Jun-2019 15:18


E-scooter share scheme launches in Wellington
Posted 17-Jun-2019 12:34


Anyone can broadcast with Kordia Pop Up TV
Posted 13-Jun-2019 10:51


Volvo and Uber present production vehicle ready for self-driving
Posted 13-Jun-2019 10:47


100,000 customers connected to fibre broadband network through Enable
Posted 13-Jun-2019 10:35


5G uptake even faster than expected
Posted 12-Jun-2019 10:01


Xbox showcases 60 anticipated games
Posted 10-Jun-2019 20:24


Trend Micro Turns Public Hotspots into Secure Networks with WiFi Protection for Mobile Devices
Posted 5-Jun-2019 13:24


Bold UK spinoff for beauty software company Flossie
Posted 2-Jun-2019 14:10


Amazon Introduces Echo Show 5
Posted 1-Jun-2019 15:32



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.