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jimmybb @jimmybb

Software Engineer. Excited about green energy, heatpumps and solar. London Joined November 2008
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jimmybb @jimmybb

10 months ago

Approximately 2 years of using my Daikin Aircon #a2a #heatpump for U.K. heating (and cooling). Annual energy demand down by half, and displacing a large amount of gas-fired heat from district heating. March / April COP of 4. #a2a heatpumps work!

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PyQuant News 🐍 @pyquantnews

2 years ago

How to get 2,370,886 historic options prices in 183 milliseconds? ArcticDB. - DataFrame database - Proven at petabyte-scale - In production at systematic hedge funds Here’s how to use it:

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jimmybb @jimmybb

a year ago

Hottest day in the UK - Aircon heatpumps can keep a house a cool for an average 370W - just a few old-fashioned light bulbs. Even better usage is covered by 6 solar panels with spare to charge the battery. #a2a #heatpump #daikin #cooling

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jimmybb @jimmybb

a year ago

Some thoughts on why Aircon #a2a cooling is much less of a concern vs home heating and vehicle electrification - at least in the UK 🪡🧵

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jimmybb @jimmybb

a year ago

Some thoughts on why Aircon #a2a cooling is much less of a concern vs home heating and vehicle electrification - at least in the UK 🪡🧵

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jimmybb @jimmybb

a year ago

“Seriously simple, Seriously secure”. @firstdirect I’ve tried contacting you a few times about my email address being used on another customers account. Please fix this and 🛑 sending me emails about George’s account 😬 #seriouslysecure

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jimmybb @jimmybb

2 years ago

There’s a little bit of east London resembling New York tonight. #steam coming from the roads, and hot water over the pavements… #heat going everywhere but into people’s homes.

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jimmybb @jimmybb

2 years ago

There’s a little bit of east London resembling New York tonight. #steam coming from the roads, and hot water over the pavements… #heat going everywhere but into people’s homes. https://t.co/5rT4Pr1IGN

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jimmybb @jimmybb

2 years ago

Over 6,000 homes without heating and hot water since 1pm due to the East London Energy primary heat network failure. Engineers aren’t sure it’ll be back tonight. Depending on unregulated heat monopolies does not serve residents well. #noheat eastlondonenergy.co.uk

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jimmybb @jimmybb

2 years ago

Over 6,000 homes without heating and hot water since 1pm due to the East London Energy primary heat network failure. Engineers aren’t sure it’ll be back tonight. Depending on unregulated heat monopolies does not serve residents well. #noheat eastlondonenergy.co.uk https://t.co/qe48AHBOwB

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jimmybb @jimmybb

2 years ago

Air permeability as measured for both Exemplar CfSH 5 properties is <5 (3.5 for mine). How useful is air tightness testing - there is silicone between my flooring and skirting boards and every other visibly internal edge…

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☀ @sav_ann

2 years ago

Air permeability as measured for both Exemplar CfSH 5 properties is <5 (3.5 for mine). How useful is air tightness testing - there is silicone between my flooring and skirting boards and every other visibly internal edge… https://t.co/FGDEXuxenv

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jimmybb @jimmybb

2 years ago

Exactly this! Seems this is just normal practice for house builders. They optimise for this test. Is there a better way to judge energy efficiency that the government could mandate for new builds? Air tightness seems like such a low bar…

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SusLifeLtd @paulsuslife

2 years ago

Exactly this! Seems this is just normal practice for house builders. They optimise for this test. Is there a better way to judge energy efficiency that the government could mandate for new builds? Air tightness seems like such a low bar…

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