Development and monitoring of the MEED high efficient shower heat recovery unit

In well isolated dwellings especially with multiple residents domestic hot water (DHW) accounts often for more than 50% of the energy consumption.Currently there exist shower heat recovery units which recover 40 – 70 percent of the heat in the shower water. This efficiency can drop due to fouling of the heat exchanger, which is often not...

RenoDouche - Renovatiepakket voor aardgasloos douchen

Het doel van het project was om drie prototype badkamer renovatiepakketten te ontwikkelen en deze in zes huurwoningen te plaatsen voor het wat betreft warmtapwater aardgasloos of aardgasloos-ready maken van deze huurwoningen. In het hieraan voorafgaande TKI project MEED is een geïsoleerde gesloten douchecabine ontwikkeld met daarin geïntegreerd...

A real-time diagnostic tool for evaluating the thermal performance of nearly zero energy buildings

The nearly zero-energy buildings (nZEB) presents a promising contribution to fulfill the EU sustainable future targets. However, the construction industry that leads the development of nZEB is facing challenges to guarantee its performance. In this context, this paper proposes a methodology framework based on Multizone Resistance–Capacitance...

Openbaar eindrapport TKI Be Aware Bewustwording van binnenluchtkwaliteit in woningen: bronnen en effectieve energie-efficiënte interventie strategieën

Openbaar eindrapport TKI Efficiënte kookapparatuur als een service

Inefficiënte kookafzuiging is een belangrijke barrière voor het realiseren van gezonde energiezuinige woningen. Het ontbreekt momenteel aan renovatieconcepten waarbij ventilatie, kookafzuiging en energiezuinige kookapparatuur optimaal op elkaar zijn afgestemd. In bestaande woningen waar veel recirculatiekappen worden toegepast ontbreekt het aan...

The development of an RC-network simulation model calibrated with monitoring data for use in the performance guarantee of Net-Zero houses

In order to drive forward the energy transition, construction companies and other suppliers of deep retrofitting solutions have started to give guarantees on the energy performance of very energy efficient houses. With these initiatives, a need has arisen for methods that can assess per household the actual energy performance during the use...

Qualification of new design of flexible pipe against singing: Testing at multiple scales

Flexible pipes for production of oil and gas typically present a corrugated inner surface. This has been identified as the cause of "singing risers": Flow-Induced Pulsations due to the interaction of sound waves with the shear layers at the small cavities present at each of the multiple corrugations. The new flexible technology discussed in this...

Direct measurements of acoustic damping and sound amplification in corrugated pipes with flow

The flow-induced pulsations in corrugated pipes result from a feedback loop between an acoustic resonator and the noise amplification at each shear layer in the axisymmetric cavities forming the corrugations. The quality factor of the resonator is determined by the reflection coefficients at the ends of the corrugated pipe and by the damping in...

Acoustic damping in smooth and corrugated pipes with and without liquid injection

From previous experiments, it was shown that small quantities of liquids reduce or eliminate the singing phenomenon in corrugated tubes. The singing mitigation was attributed to filling up of the corrugations, interference with the boundary layer or due to the increased acoustic damping. To evaluate the influence of the presence of liquids on...

Singing mitigation in corrugated tubes with liquid injection

Pipes with a corrugated inner surface, as used in flexible pipes for gas production and transport, can generate a high amplitude tonal sound (singing). Small quantities of liquid can result in a significant amplitude reduction or total mitigation of this sound production. To evaluate different potential mechanisms, liquid injection tests were...